Table 1 Coding of variables for the Nova Scotia Health Survey
From: Comparison of alternate scoring of variables on the performance of the frailty index
Variable name | Ordinal response/code | Dichotomous response/code |
|---|---|---|
Arthritis/Rheumatism | no = 0, yes = 1 | no = 0, yes = 1 |
Back problems | no = 0, yes = 1 | no = 0, yes = 1 |
Osteoporosis | no = 0, yes = 1 | no = 0, yes = 1 |
Chronic bronchitis/Emphysema | no = 0, yes = 1 | no = 0, yes = 1 |
Sinusitis | no = 0, yes = 1 | no = 0, yes = 1 |
Cancer | no = 0, yes = 1 | no = 0, yes = 1 |
Stomach/Intestinal ulcers | no = 0, yes = 1 | no = 0, yes = 1 |
Urinary incontinence | no = 0, yes = 1 | no = 0, yes = 1 |
Cataracts | no = 0, yes = 1 | no = 0, yes = 1 |
Glaucoma | no = 0, yes = 1 | no = 0, yes = 1 |
Hysterectomy/Oophorectomy | no = 0, yes = 1 | no = 0, yes = 1 |
Mental illness | no = 0, yes = 1 | no = 0, yes = 1 |
Other long-term condition | no = 0, yes = 1 | no = 0, yes = 1 |
Need help with personal care | no = 0, yes = 1 | no = 0, yes = 1 |
Need help with personal affairs | no = 0, yes = 1 | no = 0, yes = 1 |
Confined to a bed or chair most of the day | no = 0, yes = 1 | no = 0, yes = 1 |
Diabetes | no = 0, yes = 1 | no = 0, yes = 1 |
PVD | no = 0, yes = 1 | no = 0, yes = 1 |
Stroke | no = 0, yes = 1 | no = 0, yes = 1 |
Able to go outside in good weather | yes without assistance = 0, yes with assistance = 0.5, no = 1 | yes = 0, no = 1 |
Systolic blood pressure | 90-140 = 0, <90 & 140-160 = 0.5, >160 = 1 | 90-140 = 0, <90 & > 140 = 1 |
LDL | <3.3 = 0, 3.3-4.1 = 0.333, 4.1-4.9 = 0.666, >4.9 = 1 | <3.3 = 0, ≥3.3 = 1 |
Physical activity (3x weekly) | yes, for more than 6 months = 0, yes, for less than 6 months = 0.25, no, but intend to in the next 30 days = 0.5, no, but I intend to in the next 6 months = 0.75, no, and I do not intend to = 1 | yes = 0, no = 1 |