Table 1. Baseline Characteristics by Frailty Category, UK Biobank 2006 to 2010.
| Baseline characteristics | Frailty phenotype, No. (%) | ||
|---|---|---|---|
| Nonfrailty | Prefrailty | Frailty | |
| No. of participants | 168 236 | 135 885 | 10 877 |
| Age, mean (SD), y | 55.9 (8.1) | 56.3 (8.1) | 57.9 (7.6) |
| Sex | |||
| Male | 85 164 (50.6) | 65 136 (47.9) | 4439 (40.8) |
| Female | 83 072 (49.4) | 70 749 (52.1) | 6438 (59.2) |
| Townsend deprivation index, median (IQR) | −2.4 (−3.8 to −0.2) | −2.2 (−3.7 to 0.3) | −1.0 (−3.0 to 2.1) |
| Smoking status | |||
| Never | 93 692 (55.7) | 71 783 (52.8) | 4874 (44.8) |
| Former | 59 528 (35.4) | 49 277 (36.3) | 4163 (38.3) |
| Current | 15 016 (8.9) | 14 825 (10.9) | 1840 (16.9) |
| Alcohol consumption | |||
| Daily or most daily | 41 299 (24.6) | 28 525 (21.0) | 1559 (14.3) |
| 3 or 4 Times a week | 46 391 (27.6) | 31 536 (23.2) | 1531 (14.1) |
| Once or twice a week | 43 497 (25.9) | 35 772 (26.3) | 2494 (22.9) |
| 1-3 Times a month | 16 517 (9.8) | 16 139 (11.9) | 1475 (13.6) |
| Never or special occasions only | 20 532 (12.2) | 23 913 (17.6) | 3818 (35.1) |
| BMI,a mean (SD) | 26.4 (4.0) | 28.0 (4.9) | 31.2 (6.6) |
| No. of long-term morbidities | |||
| None | 69 141 (41.1) | 41 464 (30.5) | 1085 (10.0) |
| 1 | 57 581 (34.2) | 45 216 (33.3) | 2234 (20.5) |
| 2 | 27 824 (16.5) | 28 209 (20.8) | 2694 (24.8) |
| 3 | 9878 (5.9) | 13 372 (9.8) | 2278 (20.9) |
| 4 | 2826 (1.7) | 5061 (3.7) | 1373 (12.6) |
| ≥ 5 | 986 (0.6) | 2563 (1.9) | 1213 (11.2) |
a
Calculated as weight in kilograms divided by height in meters squared.