| Variable | Data Type | Katz Elements | Allowable Codes |
| q11fs | integer | Walking across a small room? (TRANSFERING) |
| 1 | No Help |
| 2 | Help |
| 3 | Unable |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
|
| q11afs | integer | Is this with help from a person, or special equipment, or both? |
| 1 | Person |
| 2 | Special equipment |
| 3 | Both |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
| q12fs | integer | Bathing, either a sponge bath, tub bath or shower? (BATHING) |
| 1 | No Help |
| 2 | Help |
| 3 | Unable |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
|
| q12afs | integer | Is this with help from a person, or special equipment, or both? |
| 1 | Person |
| 2 | Special equipment |
| 3 | Both |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
| q13fs | integer | Personal grooming, like brushing hair, brushing teeth, or washing your face? |
| 1 | No Help |
| 2 | Help |
| 3 | Unable |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
|
| q13afs | integer | Is this with help from a person, or special equipment, or both? |
| 1 | Person |
| 2 | Special equipment |
| 3 | Both |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
| q14fs | integer | Dressing, like putting on a shirt, buttoning and zipping, or putting on shoes? (DRESSING) |
| 1 | No Help |
| 2 | Help |
| 3 | Unable |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
|
| q14afs | integer | Is this with help from a person, or special equipment, or both? |
| 1 | Person |
| 2 | Special equipment |
| 3 | Both |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
| q15fs | integer | Eating, like holding a fork, cutting food, or drinking from a glass? (FEEDING) |
| 1 | No Help |
| 2 | Help |
| 3 | Unable |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
|
| q15afs | integer | Is this with help from a person, or special equipment, or both? |
| 1 | Person |
| 2 | Special equipment |
| 3 | Both |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
| q16fs | integer | Getting from a bed to a chair? (TRANSFERING) |
| 1 | No Help |
| 2 | Help |
| 3 | Unable |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
|
| q16afs | integer | Is this with help from a person, or special equipment, or both? |
| 1 | Person |
| 2 | Special equipment |
| 3 | Both |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
| q17fs | integer | Using the toilet? (TOILETING) |
| 1 | No Help |
| 2 | Help |
| 3 | Unable |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
|
| q17afs | integer | Is this with help from a person, or special equipment, or both? |
| 1 | Person |
| 2 | Special equipment |
| 3 | Both |
| 8 | Don't Know |
| 9 | Refusal |
| Null | Missing |
|
| Subjects are asked if they require help performing activities that are encountered
in daily life. Only the bold italicized questions are use in the computation of the score employing the algorithm described below. |
All "Don't know" and "Refusals" are converted to missing = Null.
All six questions must be answered in order to calculate the score.
if (q11fs, q12fs, q14fs, q15fs, q16fs, q16fs) not missing and not null then {
katz = 0
katz = katz + sum( (q11fs != 1) + (q12fs != 1) + (q14fs != 1) + (q15fs != 1) + (q16fs != 1) + (q17fs != 1) )
}
'!=' operator translates 'not equal to'. If the logical condition is true, the expression evaluates to '1' else to '0'.