Katz Index of Independence in Activities of Daily Living Variables
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 |
|
q12fs | integer | Bathing, either a sponge bath, tub bath or shower? (BATHING) |
q14fs | integer | Dressing, like putting on a shirt, buttoning and zipping, or putting on shoes? (DRESSING) |
q15fs | integer | Eating, like holding a fork, cutting food, or drinking from a glass? (FEEDING) |
q16fs | integer | Getting from a bed to a chair? (TRANSFERING) |
q17fs | integer | Using the toilet? (TOILETING) |
Subjects are asked if they require help performing these activities that are encountered
in daily life. |
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'.