Original Cohort Baseline Variables      Accidents Behaviors Care Giving Cognitive Scores Demographics Family, Childhood and Other Background Feet Genetics Interviewer Observations Medications Medical History Occupational History Parential History Personality Physical Activity Physical Function Self-Reported Conditions Vision, Hearing, and Handedness

Variable	Data Type	Description	Source Variables and Definitions	Algorithm	Coding

webid	char(9)	Subject's unique identifier	projid	N/A	Random integers, 350 to 2147240
Demographics
birthcountry	char(30)	In what state or country were you born?	q1dem	unprocessed text	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
birthcity	char(30)	In what city or town?	q2dem
birthcounty	char(30)	In what county (or province) were you born?	q3dem
gender	integer	Subject's gender.	sex	N/A	1 = male; 2 = female
race	integer	Subject's self-identified race.	race	N/A	1 = Caucasian 2 = African American 3 = American Indian 4 = Eskimo 5 = Aleut 6 = Asian or Pacific Islander
hispanic	integer	Subject's self-identified ethnicity.	hispanic	N/A	1 = Hispanic 2 = Not Hispanic
age	float	Subject's age at time of baseline.	age	N/A	≥ 61.00
marriage	integer	Marital status at time of baseline.	q5dem, q5adem	N/A	0 = Never married     1 = Married     2 = Separated     3 = Divorced     4 = Widowed     8 or Null = Missing
yrsmarriage	integer	How long have you been married?	q5bdem	N/A	1-2 digits (yrs)   98 = Don't know   99 = Refused Null = Logical skip, refused or missing
spouse	integer	Does your (husband/wife) currently live with you?	Q5cdem	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
education	integer	Years of education.	q21oc	N/A	1-  8 Elementry school   9-12 High school 13-16 College  >=17 Post-graduate
income	integer	Yearly income.	income	N/A	1 = $0 to $4999   2 = $5000 to $9999   3 = $10000 to $14999   4 = $15000 to $19999   5 = $20000 to $24999   6 = $25000 to $29999   7 = $30000 to $34999   8 = $35000 to $49999   9 = $50000 to $74999 10 = $75000+
cohort	char(2)	Subject's study cohort	cohort	N/A	OC = Original Group SC = Successive Cohort MG = Mount Greenwood Group
Self-Reported Conditions
hlthview	integer	As compared to other people your own age, would you say your health is excellent, good, fair or poor?	q1qua	N/A	1 = Excellent     2 = Good     3 = Fair     4 = Poor Null = Missing
phlthview	integer	Now, thinking about your physical health, which includes physical illness and injury, for how many days during the past 30 days was your physical health not good?	q2qua	N/A	0-30 valid; Null = Missing
mhlthview	integer	Now, thinking about your mental health, which includes stress, depression, or problems with your emotions. For how many days during the past 30 days was your mental health not good?	q3qua	N/A
mphlthview	integer	During the past 30 days, for about how many days did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation?	q4qua	N/A
hbp	integer	Have you ever been told by a doctor, nurse or therapist that you have high blood pressure?	q5medh	N/A	1 = Yes     2 = Possible or suspect Null = Refused or Missing Items
hbpwhen	integer	When where you first told that you have high blood pressure?	q5amedh	N/A	yyyy, 4-digit year Null = Logical skip, refused or missing
hbpmeds	integer	Are you currently taking any medication for your high blood pressure?	q5bmedh	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
parkinsons	integer	Parkinson's disease?	q6medh	N/A	1 = Yes     2 = Possible or suspect Null = Refused or Missing Items
shingles	integer	Shingles or Herpes Zoster?	q7medh	N/A
thyroid1	integer	Thyroid Disease?	q8medh	N/A
thyroid2	integer	When were you first told that you have thyroid disease?	q8amedh	N/A	yyyy, 4-digit year Null = Refused or missing
thyroid3	integer	Were you hospitalized overnight or longer for thyroid disease?	q8bmedh	N/A	1 = Yes     2 = No Null = Refused or Missing Items
thyroid3	integer	When was the last time you were hospitalized for thyroid disease?	q8cmedh	N/A	yyyy, 4-digit year Null = Refused or missing
hipinj1	integer	A broken or fractured hip?	q9medh	N/A	1 = Yes     2 = Possible or suspect Null = Refused or Missing Items
hipinj2	integer	Were you ever hospitalized overnight or longer for a broken or fractured hip?	q9amedh	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
hipinj3	integer	When was the last time you were hospitalized for you hip?	q9bmedh	N/A	yyyy, 4-digit year Null = Refused or missing
headinj1	integer	Have you ever had a head injury?	q1hi	N/A	1 = Yes     2 = No Null = Refused or missing
headinj2	integer	When was the head injury?	q2hi	N/A	1 More than 30 years ago 2 10 to 30 years ago 3 Less than 10 years ago 8 Don't know 9 Refused Null Missing
headinj3	integer	What year was the last time you had a head injury?	q2ahi	N/A	yyyy, 4-digit year Null = Refused or missing
headinj4	integer	Have you ever lost consciousness because of a head injury?	q3hi	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
headinj5	integer	How many times have you lost consciousness because of a head injury?	q4hi	N/A	1-80 Null = Logical skip, refused or missing
headinj6	integer	Were you ever hospitalized overnight or longer for a head injury?	q5hi	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
headinj7	integer	When were you hospitalized for a head injury?	q5ahi	N/A	yyyy, 4-digit year Null = Logical skip, refused or missing
diabetes1	integer	Have you ever been told you have diabetes, sugar in the urine, or high blood sugar?	q4medh	N/A	1 = Yes     2 = Possible or suspect     3 = No Null = Refused or missing
diabetes2	integer	Has a doctor, nurse or therapist, ever told you to take insulin or injections for your diabetes?	q4amedh	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
diabetes3	integer	Are you currently taking insulin or injections?	q4bmedh	N/A
hrtdisease1	integer	Have you ever been told by a doctor, nurse or therapist that your had a heart attack or coronary, or coronary thrombosis, or coronary occlusion, or myocardial infarction?	q1medh	N/A	1 = Yes     2 = Possible or suspect     3 = No Null = Refused or missing
hrtdisease2	integer	Did you have one incident or more than one?	q1amedh	N/A	1 = Only one     2 = More than one Null = Logical skip, refused or missing
hrtdisease3	integer	Were you hospitalized overnight or longer for this the last time?	q1bmedh	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
hrtdisease4	integer	When was the last time?	q1cmedh	N/A	4-digit year Null = Logical skip, refused or missing
stroke1	integer	Stroke? Have you ever been told by a doctor, nurse or therapist that you had a Stroke or brain hemorrhage?	q2medh	N/A	1 = Yes     2 = Possible or suspect     3 = No Null = Refused or missing
stroke2	integer	Did you have one incident or more than one?	q2amedh	N/A	1 = Only one     2 = More than one Null = Logical skip, refused or missing
stroke3	integer	Do you still have leftover troubles from your stroke?	q2bmedh	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
stroke4	integer	Were you hospitalized overnight or longer for the last stroke?	q2cmedh	N/A
stroke5	integer	When was your last stroke?	q2cmedh	N/A	4-digit year Null = Logical skip, refused or missing
stroke6	integer	Were you hospitalized overnight or longer for the last stroke?	q2cmedh	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
stroke7	integer	When was the last time you hospitalized for a stroke?	q2dmedh	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
cancer1	integer	Have you ever been told by a doctor, nurse or therapist that you had cancer, malignancy or tumor of any type?	q3medh	N/A	1 = Yes     2 = Possible or suspect     3 = No Null = Refused or missing
cancer2	char(30)	Where was the cancer?	q3amedh	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
cancer3	integer	Were you hospitalized overnight or longer for the cancer?	q3bmedh	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
cancer4	integer	When was the last time you were hospitalied for cancer?	q3cmedh	N/A	4-digit year Null = Logical skip, refused or missing
continence1	integer	How often during the last 12 months have you leaked urine or lost control or your urine?	q1ur	N/A	1 Almost everyday 2 Several times a week 3 Several times a month 4 Once a month 8 Don't know 9 Refused Null Missing
continence2	integer	When you lose urine, how much usually leaks?	q2ur	N/A	1 A few drops 2 Enough to wet underwear 3 Enough to wet outer clothes 4 Enough to wet the floor 8 Don't know 9 Refused Null Missing
continence3	integer	How much of a problem do you consider your urine loss to be?	q3ur	N/A	1 A big problem 2 A little problem 3 No problem 8 Don't know 9 Refused Null Missing
continence4	integer	In the past few months have you ever lost control of your bowels when you didn't want to?	q4ur	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
Accidents
accidents	integer	During the past year have you had any accidents or injuries involving a car, truck, or othermotor vehicle?	q1acc	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
accidents2	integer	Were you a pedestrian or in a vehicle?	q2acc	N/A	1 Pedestrian 2 Vehicle 8 Don't know 9 Refused Null Missing
accidents3	integer	Were you driving?	q3acc	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
accidents4	integer	Did you have to see a doctor or other medical practitioner?	q4acc	N/A
accidents5	integer	Were you hospitalized?	q4acc	N/A
Medical History
weight	integer	Weight	q3bp	N/A	2-3 digits, lbs Null = Refused or missing
height	integer	Height	q1hei	N/A	ft' inches" Null = Refused or missing
weight25	integer	What was your usual weight at age 25?	q3hei	N/A	2-3 digits, lbs Null = Refused or missing
childhoodwt	integer	At about 12 years of age were you considered to be... (weight)	q4hei	N/A	1 Much heavier than average 2 Somewhat heavier than average 3 About average weight 4 Somewhat thinner than average 5 Much thinner than average 8 Don't know 9 Refused Null Missing
childhoodht	integer	At about 12 years of age were you considered to be... (height)	q5hei	N/A	1 Much taller than average 2 Somewhat taller than average 3 About average height 4 Somewhat shorter than average 5 Much shorter than average 8 Don't know 9 Refused Null Missing
wtchange	integer	In the last year, have you gained or lost more than 10 pounds?	q2hei	N/A	1 Yes, lost > 10 lbs 2 Yes, gained > 10 lbs 3 Yes, gained and lost > 10 lbs 4 No changes 8 Don't know 9 Refused Null Missing
bmi	float	Calculated body-mass index.	q3bp, q1hei	Use weight in kilograms (wtkg) and height in meters (htm). bmi = wtkg/htm2	5.0000 - 80.0000 Null = missing
diastolic	integer	Diastolic Blood Pressure	q7bp, q8bp	Mean of 2 diastolic readings taken from 2 blood pressure measurements, q7bp and q8bp.	3-digits; null if Refused or missing
systolic	integer	Systolic Blood Pressure	q7bp, q8bp	Mean of 2 systolic readings taken from 2 blood pressure measurements, q7bp and q8bp.	3-digits; null if Refused or missing
femaleht1	integer	Around the time of your change of life or menopause, or any time since then, have you been treated with estrogens or female hormones?	q1fem	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
femaleht2	integer	Did you take the hormones for more than 2 years?	q2fem	N/A
chestpain1	integer	Have you ever had any pain or discomfort in your chest?	q1chp	N/A	1 = Yes     2 = No Null = Logical skip, refused or missing
chestpain2	integer	Have you ever had any pressure or heaviness in your chest?	q1achp	N/A
chestpain3	integer	Do you get this pain or discomfort when you walk uphill or hurry?	q2chp	N/A
chestpain4	integer	Do you get this pain or discomfort when you walk at an ordinary pace on the level?	q3chp	N/A
chestpain5	integer	What do you do if you get this pain while you are walking?	q4chp	N/A	1 Stop or slow down 2 Take a nitroglycerin 3 Continue at the same pace 8 Don't know 9 Refused Null Logical skip or missing
chestpain6	integer	If you stand still, what happens to the pain?	q5chp	N/A	1 Relieved 2 Not relieved 8 Don't know 9 Refused Null Logical skip or missing
chestpain7	integer	How soon is the pain relieved?	q5achp	N/A	1 10 minutes or less 2 More than 10 minutes 8 Don't know 9 Refused Null Logical skip or missing
chestpain7a	integer	Will you show me where the pain is?	q6chp1	N/A	1 Sternum (middle or upper) 2 Sternum (lower) 3 Left anterior chest 4 Left arm 5 Other area 8 Don't know 9 Refused Null Logical skip or missing
chestpain7b	integer	Will you show me where the pain is?	q6chp2	N/A
chestpain7c	integer	Will you show me where the pain is?	q6chp3	N/A
chestpain7d	integer	Will you show me where the pain is?	q6chp4	N/A
chestpain7e	integer	Will you show me where the pain is?	q6chp5	N/A
chestpain8	integer	Did you feel it (chest pain) anywhere else?	q7chp	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Logical skip or missing
chestpain9	char(20)	Where (else did you feel the chest pain) ?	q7achp	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
chestpain10	integer	Have you ever had a severe pain across the front of your chest lasting half an hour or more?	q8chp	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Logical skip or missing
chestpain11	char(20)	Did you see a doctor because of the pain?	q9chp	N/A
chestpain12	char(20)	What did (s)he say it was?	q9achp	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
chestpain13	integer	How many of these attacks have you had?	q10chp	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Logical skip or missing
jointpain1	integer	In the past year, have you had any pain or aching in any of your joints on most days for at least one month?	q1joi	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
jointpain2	integer	Pain in your neck or back on most days for at least one month?	q2joi	N/A
jointpain3	integer	Pain in or around either hip joint including the buttock, groin, and side of the upper thigh on most days for at least one month?	q3joi	N/A
jointpain4	integer	Pain in or around the knees including the back of the knee on most days for at least one month?	q4joi	N/A
jointpain5	integer	Have you had swelling at a joint, with pain present in the joint when touched, on most days for at least one month?	q5joi	N/A
jointpain6	integer	Have you had stiffness in the joints and muscles when getting out of bed in the morning lasting for at least 15 minutes?	q6joi	N/A
jointpain7	integer	Pain or aching in either of your feet on most days for at least one month?	q7joi	N/A
mpark	integer	Did your natural or biologic mother have Parkinson's disease with shaking tremors of the hands and/or slowness in walking and moving?	q1famh	N/A	1  Yes 2  Possible or suspect 2  No 8  Don't know 9  Refused Null  Missing
mmemloss	integer	Did your natural or biologic mother have Parkinson's disease with shaking tremors of the hands and/or slowness in walking and moving?	q2famh	N/A
fpark	integer	Did your natural or biologic mother have Parkinson's disease with shaking tremors of the hands and/or slowness in walking and moving?	q3famh	N/A
fmemloss	integer	Did your natural or biologic mother have Parkinson's disease with shaking tremors of the hands and/or slowness in walking and moving?	q4famh	N/A
Medications
prescriptions	integer	During the past two weeks, have you taken any medicine prescribed by a doctor?	q1drg	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
otcdrugs1	integer	Now, about drugs not usually prescribed by a doctor such as vitamin preparations including multivitamins, vitamin C, vitamin A, vitamin D, or vitamin E...During the past two weeks have you taken any of these or any other vitamin preparations?	q2drg	N/A
otcdrugs2	integer	We are also interested in other medicines not prescribed by a doctor such as aspirin...During the past two weeks have you taken any of these or any other vitamin preparations?	q3drg	N/A
mednumber	integer	Number of drugs taken, inspected or not, maximum of 20	q4drg	N/A	1..20
The following five medication data elements exist in a separate text file because there can be up to 20 drugs per participant. There will be 'mednumber' medication record(s) per subject, medseqnum: 1..mednumber.
webid	char(9)	Subject's unique identifier	projid	N/A	Random integers, 350 to 2147240
medseqnum	integer	Subject's medication counter.	medseqnum	N/A	1..20 Valid
medname	char(50)	Medication name as recorded during subject's interview session.	name01..name20	N/A	medication name
medcatagory	char(50)	Drug classification from matched Medi-Span® database record.	N/A	Medications, 'medname', were matched to a Medi-Span® drug database record by either a physician or pharmacist.	primary drug classification
genericslist	char(602)	Generic names associated with each medication name as matched to Medi-Span® database record and the corresponding ingredients listing.				chemical / generic listing, comma separated
Behaviors
smkhist	integer	Smoking history.	q1smo, q2smo	algorithm	1 = Never smoked     2 = Former smoker     3 = Current smoker Null = Don't Know, Refused or Missing
packyrs	float	Calculated score for smoking intensity.	age, q1smo, q1asmo, q1bsmo, q2smo, q2asmo, q2bsmo, q2csmo, q3smo, q4smo	packyrs algorithm	0.0000-300.0000; Null if missing items, cannot calculate.
dai	float	Score daily alcohol intake.	q1alc, q2alc, q3alc, q4alc, q5alc	if (q1alc = 2 or q2alc = 2)    then dai = 0.0      else if at least two of (q3alc, q4alc, and q5alc) are not missing, then q3alc, q4alc, and q5alc each are recoded to a 1 - 9 scale and the recoded scores summed to compute dai.	0.0 to 6.0; floating point score representing lifetime alcohol intake; null if refused or missing items
ldai	float	Score for lifetime alcohol intake. Value represents the amount of alcoholic drinks (beer, wine, or liquor) consumed per day as expressed by participant during the period they drank the most in their lifetime. Maximum value of 6 represents 6 or more drinks per day during this period.	q1alc, q2alc, q6alc	if (q1alc = 2 or q2alc = 2)    then ldai = 0      else process q6alc to ldai as: q6alc description ldai 1 6+ drinks/day 6.0 2 4-5 drinks/day 4.5 3 2-3 drinks/day 2.5 4 1 drink/day 1.0 5 5-6 drinks/week 0.8 6 2-4 drinks/week 0.4 7 1 drink/week 0.2 8 1-3 drinks/month 0.1 9 < 1 drink/month 0.0	0.0 to 6.0; floating point score representing lifetime alcohol intake; null if refused or missing items
Personality
cesd	integer	CES-D Self-Reported Depression Scale Score	q1md, q2md, q3md, q4md, q5md, q6md, q7md, q8md, q9md, q10md	cesd Algorithm	0-10 valid; null if Refused or Missing Items
newthings	integer	I enjoy learning how to do new things.	q1per	N/A	1  Strongly disagree 2  Disagree 3  Neutral 4  Agree 5  Strongly Agree 8  Don't know 9  Refused Null  Missing
readvstv	integer	In my spare time, I would rather read than watch television.	q2per	N/A
bigchanges	integer	I do not like big changes in my routine.	q5per	N/A
setinways	integer	I tend to be set in my ways.	q10per	N/A
harddriven	integer	I'm hard driven and competitive?	q13per	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
pressed4time	integer	I'm usually pressed for time?	q14per	N/A
eat2quickly	integer	I eat too quickly?	q15per	N/A
neuroticism	integer	Score for neuroticism; the tendency to have a negative outlook.	q3per, q6per, q8per, and q12per	3 of 4 (q3per, q6per, q8per and q12per) must be answered neuroticism = sum(q3per+(6-q6per)+q8per+q12per)	0 (low) to 20 (high); Null if refused or missing items.
extraversion	integer	Score for extraversion; personality elements of sociability, assertiveness, emotional expressiveness and excitability	q4per, q7per, q9per, and q11per	3 of 4 (q4per, q7per, q9per, and q11per) must be answered extraversion = sum(q4per+(6-q7per)+q9per+q11per)	0 (low) to 20 (high); Null if refused or missing items.
socialnet	integer	Score for social network. The social network consists of children, close relatives, and friends, how many and how often they are seen.	q1sn, q2sn, q2asn, q3sn, , q3asn, q3a1sn, q4sn, q4qsn, q4a1sn	socialnet algorithm	0-100  Valid Null  Missing
socialeng	integer	Score for social engagement.	q1oc, q2oc, q7act, q8act, q5sn	socialeng algorithm	0-8  Valid Null  Missing
othsocial	integer	Do you participate in any activities or groups outside the house, such as a senior center, public service, etc.?	q5sn	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
othsocial2	integer	About how often are you involved in activities with (this/these) group(s)?	Q5asn	N/A	1  Less than once a month 2  1 to 3 times/month 3  Once a week 4  2 to 4 times a week 5  5 or more times a week 8  Don't know 9  Refused Null  Missing Vision, Hearing, and Handeness
Vision, Hearing, and Handedness
wearlenses	integer	Do you wear glasses, contact lenses or both?	q1he	N/A	1  Eyeglasses 2  Contact lenses 3  Both 4  Neither 8  Don't know 9  Refused Null  Missing
vision1	integer	Can you see well enough to recognize a friend across the room?	q2he	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
vision2	integer	Can you see well enough to recognize a friend who is an arms length away?	q2ahe	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
vision3	integer	Can you see well enough to recognize a friend if you get close to his face?	q2bhe	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
vision4	integer	Can you see well enough to read ordinary newspaper print?	q3he	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
vision5	integer	Can you see well enough to read large print such as newspaper headlines?	q3ahe	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
hearingaid1	integer	Do you wear a hearing aid?	q4he	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
hearingaid2	integer	How often do you usually wear a hearing aid these days?	q4ahe	N/A	1  Practically always 2  Frequently 3  Occassionally 4  Almost never 8  Don't know 9  Refused Null  Missing
hearing1	integer	With/without a hearing aid can you usually hear and understand what a person says without seeing his or her face if that person talks in a normal voice to you in a quiet room?	q5he	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
hearing2	integer	With/without a hearing aid can you usually hear and understand what a person says without seeing his or her face if that person shouts to you from across a quiet room?	q5ahe	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
hearing3	integer	Can you usually understand what a person says without seeing his or her face if that person shouts in your better ear?	q5bhe	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
handedness1	integer	Which hand do you usually use to write a letter?	q1han	N/A	1  Right 2  Left 3  Either 8  Don't know 9  Refused Null  Missing
handedness2	integer	Which hand do you usually use to cut paper or cloth with scissors.	q2han	N/A	1  Right 2  Left 3  Either 8  Don't know 9  Refused Null  Missing
Cognitive Scores
mmse	integer	Mini-Mental Score	q1mme, q2mme, q3mme, q4mme, q5mme, q6mme, q7mme, q8mme, q9mme, q10amme, apple, table, penny, q13amme, q13bmme, q13cmme, q14mme, q15mme, q16mme, q17mme, paper, folds, places, q19mme, q20mme	Sum of individual items with q12bmme required, none missing, none unable to do, and no more than 4 refusals.	0-30 valid; null if q12bmmse missing, any item missing or unable to do or more than 4 items refused
mmseimp	integer	Mini-Mental Imputed Score	q1mme, q2mme, q3mme, q4mme, q5mme, q6mme, q7mme, q8mme, q9mme, q10mme, apple, table, penny, q13amme, q13bmme, q13cmme, q14mme, q15mme, q16mme, q17mme, paper, folds, places, q19mme, q20mme	Imputed sum of individual items with q12bmme required, none missing, and no more than 4 refusals. The imputed score will include items unable to do. The imputation is done on the basis of a total possible score of 30. mmseimp = (#correct/number answered) * 30	0-30 valid; null if q12bmmse missing, any item missing or more than 4 items refused
ebmt	integer	Score for the East Boston Mental Test	q1ebmt, q2ebmt, q3ebmt, q4ebmt, q5ebmt, q6ebmt, q7ebmt, q8ebmt, q9newebmt, q10newebmt, q11ebmt, q12ebmt	Sum q1ebmt..q12ebmt where concepts are present. One point for each. No refusals or missing values allowed.	0-12 valid; null if refused or missing Items
ebdr	integer	Score for the East Boston Delayed Recall Mental Test	q1ebdr, q2ebdr, q3ebdr, q4ebdr, q5ebdr, q6ebdr, q7ebdr, q8ebdr, q9ebdr, q9newebdr, q10newebdr, q11ebdr, q12ebdr	Sum q1ebdr..q12ebdr where concepts are present. One point for each. No refusals or missing values allowed.	0-12 valid; null if refused or missing Items
sdmt	integer	Symbol digits modalities test score	row1, row2, row3, row4, row5, row6, row7, row8, row9, row10, row11	Sum the count of number of correct digit-positions. Each row is 10 digits. The test is terminated at 90 seconds.	0-110 valid; null if refused, missing all items, or unable to perform
globcog	float	Global Cognitive Score	mmseimp, sdmt, ebmt, ebdr	Each test is converted to a z-score and the results averaged.	-4.5-2.0 valid; null if missing Items
Physical Function
chairstand	integer	Score for chair stands. This is a measure of the ability to get out of a straight-backed chair without using arms or assistance. The participant is asked to get up out of a chair without using his/her arms. The score is based on the participant’s ability to get up from the chair without using arms.	q5bpm, q6apm, and q6bpm	Q5bpm records first attempt to rise from chair without arms. Only if q5bpm was , then the subject is asked to attempt 5 repeated chair stands as quick as possible. The number successful is recorded in q6apm. Q6bpm records the time in seconds to complete 5 chair stands.	0 = Cannot stand without using arms; 1 = One to 4 chair stands successfully completed or q5bpm pre-test attempt successful; 2-5 = time divided into quartiles for those who completed 5 chair stands. Null if q5bpm was not attempted or physically unable.
walkscr	integer	Score for measured walk. This is a measure of typical walking speed. The participant is asked to walk 8 feet from a stopped position to a point past a stop line. The score is based on the time from start to one foot crossing over the stop line.	q4apm	Measured time is output as belonging to a quintile coded from 1-5 with 0 indicating that the person cannot walk or 'tried, but unable'. The time in seconds is held by the variable walk, 1.0 - 555.5 are valid and >600 or null = missing.	0 = Cannot walk; 1-5 Measured time represented as a quintile; 1 is quintile taking the longest time, 5 the least time
walkaids	integer	Record Aids Used in Measured Walk	q4bpm	Measured time is output as belonging to a quintile coded from 1-5 with 0 indicating that the person cannot walk or 'tried, but unable'.	1  No aid 2  Quad cane 3  Other cane 4  Walker 5  Wheelchair as walking aid 6  Other 8  Don't know 9  Refused Null  Missing
otheraid	char(20)	Specify other assistive aid used to walk.	q4b1pm	unprocessed text	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
tandemstand	integer	Combined score for side-by-side, semi-tandem, and full-tandem stands, each with eyes open. The stand tests are a measure of balance.	q1pm, q2pm, q3pm	The score is based on the progressive ability to hold side-by-side, semi-tandem, and finally a full-tandem stand for up to a maximum of 10 seconds.	0 (low) to 5 (high); Null = skipped or missing
physp	integer	Overall score for physical function assessed by a combining the scores for the repeated chair stand ('chair'), the tandem stand ('tandem'), and the measured walk ('walk').	'chair' (repeated chair stand), 'tandem' (tandem stand), walk (measured walk)	physp = sum(chair + walk + tandem)	0 - 15, All three variables must be present. 0 is lowest score: Null for missing one or more items.
katz	integer	Katz index of independence in activities of daily living.	q11fs, q12fs, q14fs, q15fs, q16fs, q17fs, and additional related questions	katz algorithm	0-6  Scaled Range 0  Subject not impaired 6  Most impaired 8  Don't know 9  Refused Null  Missing
nagi	integer	Nagi Functional Impairment Score.	q4fs q5fs q6fs q7fs q8fs	nagi algorithm	0-5  Scaled Range 0  Subject not impaired 5  Most impaired 8  Don't know 9  Refused Null  Missing
rosbreslau	integer	Rosow-Breslau Impairment Score.	q1fs q2fs q3fs	rosbreslau algorithm	0-3  Scaled Range 0  Subject not impaired 3  Most impaired 8  Don't know 9  Refused Null  Missing
rtshldrot	integer	External Shoulder Rotation - Right Side	q7apm	N/A	1  Performed Fully 2  Performed partially; hand behind head 3  Performed partially; arm raised 4  Unable to do 8  Don't know 9  Refused Null  Missing
lftshldrot	integer	External Shoulder Rotation - Left Side	q7bpm	N/A	1  Performed Fully 2  Performed partially; hand behind head 3  Performed partially; arm raised 4  Unable to do 8  Don't know 9  Refused Null  Missing
Feet
toenails	integer	Do you have trouble trimming, cutting, or clipping your toenails?	q9fs	N/A	1  No difficulty at all 2  A little difficulty 3  Some difficulty 4  A lot of difficulty 5  Just unable to do it 8  Don't know 9  Refused Null  Missing
shoes	integer	How much difficulty do you have finding shoes that are comfortable?	q10fs
Physical Activities
walking	integer	Do you walk for exercise?	q1phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
walkfreq	integer	How many times in the past 14 days did you go walking for exercise?	q1aphy	N/A	0-80 valid; 99 Refused; Null Missing
walktime	integer	On average, about how many minutes did you actually spend on each occasion?	q1bphy	N/A	0-500 Valid; 999 Refused; Null Missing
jogging	integer	Do you jog or run?	q2phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
jogfreq	integer	How many times in the past 14 days did you go jogging or running?	q2aphy	N/A	0-20 valid; 99 Refused; Null Missing
jogtime	integer	On average, about how many minutes did you actually spend on each occasion?	q2bphy	N/A	0-300 Valid; 999 Refused; Null Missing
gardening	integer	Gardening or yard work?	q3phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
gardenfreq	integer	How many times in the past 14 days did you go jogging or running?	q3aphy	N/A	0-20 valid; 99 Refused; Null Missing
gardentime	integer	On average, about how many minutes did you actually spend on each occasion?	q3bphy	N/A	0-300 Valid; 999 Refused; Null Missing
dancing	integer	Do you go dancing?	q4phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
dancefreq	integer	How many times in the past 14 days did you go dancing?	q4aphy	N/A	0-20 valid; 99 Refused; Null Missing
dancetime	integer	On average, about how many minutes did you actually spend on each occasion?	q4bphy	N/A	0-300 Valid; 999 Refused; Null Missing
exercise	integer	Calisthenics or general exercise?	q5phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
exerfreq	integer	How many times in the past 14 days did you exercise?	q5aphy	N/A	0-20 valid; 99 Refused; Null Missing
exertime	integer	On average, about how many minutes did you actually spend on each occasion?	q5bphy	N/A	0-300 Valid; 999 Refused; Null Missing
golf	integer	Do you go golfing?	q6phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
golffreq	integer	How many times in the past 14 days did you go golfing?	q6aphy	N/A	0-20 valid; 99 Refused; Null Missing
golftime	integer	On average, about how many minutes did you actually spend on each occasion?	q6bphy	N/A	0-300 Valid; 999 Refused; Null Missing
bowling	integer	Do you go bowling?	q7phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
bowlfreq	integer	How many times in the past 14 days did you go bowling?	q7aphy	N/A	0-20 valid; 99 Refused; Null Missing
bowltime	integer	On average, about how many minutes did you actually spend on each occasion?	q7bphy	N/A	0-300 Valid; 999 Refused; Null Missing
biking	integer	Bicycle riding (including stationary bikes)?	q8phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
bikefreq	integer	How many times in the past 14 days did you go biking?	q8aphy	N/A	0-20 valid; 99 Refused; Null Missing
biketime	integer	On average, about how many minutes did you actually spend on each occasion?	q8bphy	N/A	0-300 Valid; 999 Refused; Null Missing
swimming	integer	Swimming or water exercises?	q9phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
swimfreq	integer	How many times in the past 14 days did you go swimming?	q9aphy	N/A	0-20 valid; 99 Refused; Null Missing
swimtime	integer	On average, about how many minutes did you actually spend on each occasion?	q9bphy	N/A	0-300 Valid; 999 Refused; Null Missing
othphy	integer	Have you done any other exercises, sports, or physically active hobbies in the past 2 weeks other than the ones listed above?	q10phy	N/A	1 Yes 2 No 8 Don't know 9 Refused Null Missing
othphyspec	char(30)	Specify the activity.	q101phy	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
othphyfreq	integer	How many times in the past 14 days did you do this activity?	q10aphy	N/A	0-20 valid; 99 Refused; Null Missing
othphytime	integer	On average, about how many minutes did you actually spend on each occasion?	q10bphy	N/A	0-300 Valid; 999 Refused; Null Missing
Cognitive Activities
tvfreq	integer	How often do you watch television?	q1act	N/A	1 Every day or almost every day 2 Several times a week 3 Several times a month 4 Several times a year 5 Once a year or less 8 Don't know 9 Refused Null Missing
tvtime	integer	How many hours each day, on average, do you watch television?	q1aact	N/A	0-24 Valid; 99 Refused; Null Missing
tvprograms	integer	What sort of television programs do you spend the most time watching?	q1bact	N/A	1 Game shows 2 Soap operas 3 News 4 Educational programs 5 Movies 6 Dramas 7 Adventures 8 Comedies 9 Sports 10 Religious programs 11 Other 88 Don't know 99 Refused Null Missing
tvother	char(30)	Specify the TV programming that you watch.	q1cact	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
radiofreq	integer	How often do you listen to the radio?	q2act	N/A	1 Every day or almost every day 2 Several times a week 3 Several times a month 4 Several times a year 5 Once a year or less 8 Don't know 9 Refused Null Missing
radiotime	integer	How many hours each day, on average, do you listen to the radio?	q2aact	N/A	0-24 Valid; 99 Refused; Null Missing
radioprgms	integer	What sort of radio programs do you listen to mostly?	q2bact	N/A	1 Talk shows 2 Rock or rap music 3 Pop, easy listening, country western 4 Jazz 5 Classical Music 6 News 7 Sports 8 Religious programs 9 Other 88 Don't know 99 Refused Null Missing
radioprgmsoth	char(30)	Specify the radio programming most listened.	q2cact	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
npfreq	integer	How often do you read newspapers?	q3act	N/A	1 Every day or almost every day 2 Several times a week 3 Several times a month 4 Several times a year 5 Once a year or less 8 Don't know 9 Refused Null Missing
npread	integer	Which newspaper do you read the most?	q3aact	N/A	1 Chicago Tribune 2 Chicago Sun-Times 3 Chicago Defender 4 Southtown Economist 9 Other 88 Don't know 99 Refused Null Missing
npother	char(30)	Specify the newspaper.	q3oaact	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
npsection	integer	What part of the newspaper do you spend the MOST time reading?	q3bact	N/A	1 Advertisements 2 News pages 3 Women's pages 4 Sports pages 5 Business pages 6 Crossword 7 Other 8 Don't know 9 Refused Null Missing
npsother	char(20)	Specify the paper section.	q3obact	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
magznfreq	integer	How often do you read magazines?	q4act	N/A	1 Every day or almost every day 2 Several times a week 3 Several times a month 4 Several times a year 5 Once a year or less 8 Don't know 9 Refused Null Missing
magznread	char(60)	Which magazines do you read the most?	q4aact	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
booksfreq	integer	How often do you read books?	q5act	N/A	1 Every day or almost every day 2 Several times a week 3 Several times a month 4 Several times a year 5 Once a year or less 8 Don't know 9 Refused Null Missing
bookskind	integer	What sort of books do you read the most?	q5aact	N/A	1 Novels or other fiction books 2 Biographies or other non-fiction books 3 Self-improvement books 4 The Bible or other religious books 5 Books about hobbies 6 Technical or business books 7 Other 8 Don't know 9 Refused Null Missing
booksother	char(20)	Specify the kind of books you read the most?	q5oact	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
gamesfreq	integer	How often do you play games such as cards, checkers, crosswords or other puzzles or games?	q6act	N/A	1 Every day or almost every day 2 Several times a week 3 Several times a month 4 Several times a year 5 Once a year or less 8 Don't know 9 Refused Null Missing
gamesplayed	char(60)	What games do you play the most?	q6aact	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
churchfreq	integer	How often do you go to religious services?	q7act	N/A	1 Every day or almost every day 2 Several times a week 3 Several times a month 4 Several times a year 5 Once a year or less 8 Don't know 9 Refused Null Missing
museumfreq	integer	How often do you go to museums?	q8act	N/A	1 Every day or almost every day 2 Several times a week 3 Several times a month 4 Several times a year 5 Once a year or less 8 Don't know 9 Refused Null Missing
Occupational History
wrking	integer	Are currently working at a job?	q1oc	N/A	1  Yes 2  No 8 Don't know 9 Refused Null Missing
wrkfullpart	integer	Full-time or part-time?	q2oc	N/A	1  Part-time 2  Full-time 8 Don't know 9 Refused Null Missing
wrkkind	char(30)	What kind of work are you doing?	q3oc	unprocessed text	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
wrkduties	char(60)	What are your most important activities or duties?	q4oc	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
wrkbusiness	char(30)	In what kind of business or industry do you work?	q5oc	unprocessed text	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
wrktrade	integer	Is this mainly manufacturing, wholesale trade, retail trade, or some other type of industry?	q6oc	N/A	1  Manufacturing 2  Wholesale trade 2  Retail trade 2  Other industry 8 Don't know 9 Refused Null Missing
wrkemploy	char(30)	Are you an employee of private company, a government employee, self employed, or working without pay in a family business?	q7oc	N/A	1  Employed by a private company 2  Government employee 2  Self-employed, incorporated 2  Self-employed, not incorporated 2  Working without pay in a family business 8 Don't know 9 Refused Null Missing
retired	integer	Are you retired?	q8oc	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
retiredyr	integer	In what year did you retire?	q8aoc	N/A	yyyy  Valid 9998  Don't know 9999  Refused Null  Missing
ljob	char(30)	What kind of work have you done most of your life?	q9oc	N/A	1  Same as current occupation 2  Not currently working; occupation specified 3  Different occupation from current one 4  Housewife 5  Never worked/disabled 8  Don't know 9  Refused Null  Missing
ljobspec	char(30)	Specify the occupation for most of your life.	q9aoc	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
ljobduties	char(30)	What were your most important activities or duties?	q10oc	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
ljobbusiness	char(30)	In what kind of business or industry do you work?	q11oc	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
ljobtrade	integer	Is this mainly manufacturing, wholesale trade, retail trade, or some other type of industy?	q12oc	N/A	1  Manufacturing 2  Wholesale trade 2  Retail trade 2  Other industry 8 Don't know 9 Refused Null Missing
ljobemploy	char(30)	Are you an employee of private company, a government employee, self employed, or working without pay in a family business?	q13oc	N/A	1  Employed by a private company 2  Government employee 3  Self-employed, incorporated 4  Self-employed, not incorporated 5  Working without pay in a family business 8 Don't know 9 Refused Null Missing
ljoblevel	char(30)	Considering the time when you worked most recently and thinking of the person in your organization who had the most control over what you did on the job- which of these statements best describes how closely you were supervised?	q14oc	N/A	1  Supervisor decided both what I did and how I did it 2  Supervisor decided what I did, but I decided how to do it 2  I had some freedom in deciding what I did and how to do it 2  I was my own boss within general policies 8 Don't know 9 Refused Null Missing
ljobfreedom	char(30)	Considering the time when you worked most recently and thinking of the person in your organization who had the most control over what you did on the job- which of these statements best describes how closely you were supervised?	q15oc	N/A	1  Completely free 2  Quite a bit free 3  A little bit free 4  Hardly free at all 8 Don't know 9 Refused Null Missing
thrtyjob	integer	What kind of work did you do when you were 30 years of age?	q16oc	N/A	1  Same as current occupation 2  Same as work done most of life 3  Different occupation from job(s) described previously 4  Housewife 5  Other, not working 8 Don't know 9 Refused Null Missing
thrtynotwork	char(30)	Specify reason for not working.	q16ooc	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
thrtyjobspec	char(30)	Specify occupation	q16aoc	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
thrtyjobduties	char(30)	What were your most important activities or duties?	q17oc	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
thrtyjobbusiness	char(30)	In what kind of business or industry did you work?	q18oc	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Logical skip or Missing
thrtyjobtrade	char(30)	Was this mainly manufacturing, wholesale trade, retail trade, or some other type of industy?	q19oc	N/A	1  Manufacturing 2  Wholesale trade 2  Retail trade 2  Other industry 8 Don't know 9 Refused Null Missing
thrtyjobemploy	char(30)	Are you an employee of private company, a government employee, self employed, or working without pay in a family business?	q20oc	N/A	1  Employed by a private company 2  Government employee 3  Self-employed, incorporated 4  Self-employed, not incorporated 5  Working without pay in a family business 8 Don't know 9 Refused Null Missing
Care Giving
caregive1	integer	During the past year, have you had the major responsibility for providing care to another person because of health problems, illness or disability?	q1care	N/A	1 Yes 2 No 88 Don't know 99 Refused Null Missing
caregive2	integer	Are you still providing this care?	q2care	N/A	1 Yes 2 No 88 Don't know 99 Refused Null Missing
caregive3	integer	What is this persons relationship to you?	q3care	N/A	1  Spouse 2  Father 3  Mother 4  Son 5  Daughter 6  Brother 7  Sister 8  Father-in-law 9  Mother-in-law 10  Other male relative 11  Other female relative 12  Male friend 13  Female friend 14  Other 66  Unknown Null  Logical skip or missing
caregive4	char(20)	Specified other care receiver relationship.	q3acare	unprocessed text	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
caregive5	integer	In a typical week, on how many days do you provide at least some care?	q4care	N/A	1-7  Valid 12  Less than once a week 66  Unknown 99  Refused Null  Logical skip or missing
caregive6	integer	In each of these days, how much time do you spend providing this care?	q5care	N/A	1-24  Valid 66  Unknown 98  Don't know 99  Refused Null  Logical skip or missing
Family, Childhood and Other Background
earlyfamily1	integer	Including yourself, how many people lived in your family's home when you were 2 years old?	q1ch	N/A	1-76  Valid 98  Don't know 99  Refused Null  Missing
earlyfamily2	integer	Of these people, how many were children under the age of 16?	q2ch	N/A
earlyfamily3	integer	How would you describe your family's financial situation when you were a very young child?	q6ch	N/A	1  Very poor 2  Somewhat poor 3  About average 4  Somewhat well off 5  Very well off 8  Don't know 9  Refused Null  Missing
childhood1	integer	How often did you go without enough food to eat as a child?	q7ch	N/A	1  Never 2  Very rarely 3  Rarely 4  Sometimes 5  Often 5  Almost always 8  Don't know 9  Refused Null  Missing
childhood2	integer	Compared to other children your own age, how would you rate your overall health as a child?	q8ch	N/A	1  Excellent 2  Good 3  Fair 4  Poor 8  Don't know 9  Refused Null  Missing
childhood3	integer	How many different communities did you live in during the first 15 years of your life?	q9ch	N/A	1-76  Valid 98  Don't know 99  Refused Null  Missing
animals	integer	In your entire life, altogether, how many years have you lived or worked around animals?	q1ani	N/A	1  Never 2  1 to 3 months 3  4 to 6 months 4  7 to 11 months 5  1 to 2 years 6  3 to 10 years 7  11 years or more 8  Don't know 9  Refused Null  Missing
birds	integer	Chicken or fowl?	q1a1ani	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
cattle	integer	Cattle?	q1a2ani	N/A
horses	integer	Horses?	q1a3ani	N/A
pigs	integer	Pigs?	q1a4ani	N/A
sheep	integer	Sheep?	q1a5ani	N/A
goats	integer	Goats?	q1a6ani	N/A
dogs	integer	Dogs?	q1a7ani	N/A
cats	integer	Cats?	q1a8ani	N/A
Parental History
mbirthyr	integer	In what year was your mother born?	q1pi	N/A	yyyy  Valid 9998  Don't know 9999  Refused Null  Missing
magebirth1	integer	How old was your mother when you were born?	q1api	N/A	10-50  Allowed range 8  Don't know 9  Refused Null  Missing
magebirth2	integer	Do you know if she was less than 15 years old, 15 to 20 years, in her 20's, 30's or in her 40's?	q1bpi	N/A	1  Less than 15 years 2  15 to 20 years 3  20's 4  30's 5  40's 8  Don't know 9  Refused Null  Logical skip or missing
mliving	integer	Is your mother still living?	q2pi	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
mdiedyr	integer	In what year did she die?	q2api	N/A	yyyy  Valid 9998  Don't know 9999  Refused Null  Logical skip or missing
mdeathage	integer	How old was your mother when she died?	q2bpi	N/A	16-110  Allowed range 998  Don't know 999  Refused Null  Logical skip or missing
mnowage	integer	How old is she now?	q2cpi	N/A
mnumchildren	integer	How many children did your mother have?	q3pi	N/A	1-30  Allowed range 8  Don't know 9  Refused Null  Logical skip or missing
mnumoldersibs	integer	How many of these children were older than you?	q4pi	N/A
mwork	char(30)	What kind of work did your mother do most of her life?	q5pi	unprocessed text	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
meduc1	integer	What was the highest grade or year of regular school your mother completed?	q6pi	N/A	0-30  Allowed range 8  Don't know 9  Refused Null  Missing
meduc2	integer	Would you say that she had no schooling, a few years, finished grammar school, had any high school, or any college?	q6api	N/A	1  No schooling 2  A few years 3  Finished grammar school 4  Any high school 5  Any college 8  Don't know 9  Refused Null  Missing
fbirthyr	integer	In what year was your father born?	q7pi	N/A	yyyy  Valid 9998  Don't know 9999  Refused Null  Missing
fagebirth1	integer	How old was your father when you were born?	q7api	N/A	10-50  Allowed range 8  Don't know 9  Refused Null  Missing
fagebirth2	integer	Do you know if he was less than 15 years old, 15 to 20 years, in her 20's, 30's or in her 40's?	q7bpi	N/A	1  Less than 15 years 2  15 to 20 years 3  20's 4  30's 5  40's 6  50+ 8  Don't know 9  Refused Null  Logical skip or missing
fliving	integer	Is your father still living?	q8pi	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
fdiedyr	integer	In what year did he die?	q8api	N/A	yyyy  Valid 9998  Don't know 9999  Refused Null  Logical skip or missing
fdeathage	integer	How old was your father when she died?	q8bpi	N/A	16-110  Allowed range 998  Don't know 999  Refused Null  Logical skip or missing
fnowage	integer	How old is he now?	q8cpi	N/A
fwork	char(30)	What kind of work did your father do most of her life?	q9pi	unprocessed text	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
feduc1	integer	What was the highest grade or year of regular school your father completed?	q10pi	N/A	0-30  Allowed range 8  Don't know 9  Refused Null  Missing
feduc2	integer	Would you say that he had no schooling, a few years, finished grammar school, had any high school, or any college?	q10api	N/A	1  No schooling 2  A few years 3  Finished grammar school 4  Any high school 5  Any college 8  Don't know 9  Refused Null  Missing
Interviewer Observations
understood	integer	How well do you think the participant understood the questions?	q3int	N/A	1  Quite well 2  Fairly well 3  Somewhat 4  Very little 5  Not at all 8  Don't know 9  Refused Null  Missing
hearing	integer	Does the participant have a substantial hearing impairment?	q4int	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
vision	integer	Does the participant have a SUBSTANTIAL visual impairment?	q5int	N/A	1  Yes, completely blind 2  Yes, very poor 3  Yes, poor 4  No, not substantial 8  Don't know 9  Refused Null  Missing
cogeffort	integer	How great an effort do you think the participant put into the cognitive function items?	q6int	N/A	1  A great deal 2  A considerable amount 3  A moderate amount 4  A little bit 4  Hardly any 8  Don't know 9  Refused Null  Missing
phyeffort	integer	How great an effort do you think the participant put into the physical function items?	q7int	N/A
sitin	integer	Did another person sit in on any part of the evaluation?	q1int	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
whosatin	integer	Who sat in on the evaluation?	q1aint	N/A	1  Relative 2  Friend 3  Other staff 4  Other 8  Don't know 9  Refused Null  Missing
whospecify	char(30)	Specify other who sat in on the evaluation?	q1a1int	N/A	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
satintime	integer	For how long did the person sit in on the evaluation?	q1bint	N/A	1  10 minutes or less 2  11 - 30 minutes 3  31 - 60 minutes 4  More than 60 minutes 8  Don't know 9  Refused Null  Missing
sameday	integer	Was the evaluation completed on the same day it was begun?	q2int	N/A	1  Yes 2  No 8  Don't know 9  Refused Null  Missing
start2end	integer	How long was the interval between beginning and concluding interview days?	q2aint	N/A	1  Less than 5 days 2  5 - 10 days 3  11 - 30 days 4  31 or more days 8  Don't know 9  Refused Null  Missing
time1	char(7)	Start time of interview manually entered by interviewer.	time1	12 hr time, AM/PM	hh:mm[ap]m  Valid Null  Missing
autotm	char(8)	Start time of interview automatically generated by laptop.	autotm	24 hr Military time	hh:mm:ss  Valid Null  Missing
time2	char(7)	Finish time of interview manually entered by interviewer.	time1	12 hr time, AM/PM	hh:mm[ap]m  Valid Null  Missing
autoendtm	char(8)	Finish time of interview automatically generated by laptop.	autotm	24 hr Military time	hh:mm:ss  Valid Null  Missing
location	integer	Location of participant at time of interview?	q8int	N/A	1  At home 2  At nursing home 3  At community building 4  Other 8  Don't know 9  Refused Null  Missing
locationspec	char(30)	Specified other location.	q8aint	unprocessed text	Any Text  Valid 9999*8  Don't know 9999*9  Refused Null  Missing
Genetics
apoe	char	APOE genotype	apoe	N/A	Four characters, two characters for each allele, the E2, E3, and E4 alleles; null if missing