From: The effects of vitamin D supplementation on frailty in older adults at risk for falls
 | All (N = 687) | Primary Analysis Population (N = 687) | Burn-in cohort (n = 405)b | ||||
---|---|---|---|---|---|---|---|
Control (200 IU/d) (n = 339) | Pooled Higher Doses (PHD)a (n = 348) | 200 IU/d (n = 205) | 1000 IU/d (n = 66) | 2000 IU/d (n = 67) | 4000 IU/d (n = 67) | ||
Age (years), mean ± SD | 77.1 ± 5.4 | 77.1 ± 5.4 | 77.2 ± 5.4 | 77.7 ± 5.6 | 76.4 ± 4.4 | 77.3 ± 4.6 | 79.1 ± 5.9 |
Sex, no. (%) | |||||||
 Male | 388 (56.5) | 198 (58.4) | 190 (54.6) | 88 (42.9) | 28 (42.4) | 29 (43.3) | 27 (40.3) |
 Female | 299 (43.5) | 141 (41.6) | 158 (45.4) | 117 (57.1) | 38 (57.6) | 38 (56.7) | 40 (59.7) |
Race, no. (%)c | |||||||
 White | 542 (79.7) | 276 (82.4) | 266 (77.1) | 171 (83.4) | 48 (72.7) | 50 (75.8) | 56 (83.6) |
 Black | 124 (18.2) | 55 (16.4) | 69 (20.0) | 32 (15.6) | 13 (19.7) | 15 (22.7) | 10 (14.9) |
 Other | 23 (3.4) | 7 (2.1) | 16 (4.6) | 4 (2.0) | 5 (7.6) | 2 (3.0) | 1 (1.5) |
BMI (kg/m2), mean ± SD | 30.5 ± 6.0 | 30.4 ± 6.3 | 30.6 ± 5.6 | 30.2 ± 6.3 | 31.5 ± 5.7 | 30.7 ± 6.4 | 30.3 ± 6.2 |
Serum vitamin D (ng/mL)d | |||||||
 10 to 19, no. (%) | 200 (29.1) | 100 (29.5) | 100 (28.7) | 69 (33.7) | 15 (22.7) | 25 (37.3) | 22 (32.8) |
 20 to 29, no. (%) | 487 (70.9) | 239 (70.5) | 248 (71.3) | 136 (66.3) | 51 (77.3) | 42 (62.7) | 45 (67.2) |
Taking a personal vitamin D supplement | |||||||
 No. (%) | 255 (37.1) | 124 (36.6) | 131 (37.6) | 76 (37.1) | 26 (39.4) | 26 (38.8) | 21 (31.3) |
 Median (IQR), IU/d | 700 (600) | 800 (586) | 700 (600) | 800 (586) | 750 (500) | 800 (500) | 571 (400) |
Fell ≥ 1 time in prior year, no. (%) | 449 (65.4) | 221 (65.2) | 228 (65.5) | 135 (65.9) | 42 (63.6) | 43 (64.2) | 45 (67.2) |
Number of chronic conditionse, mean ± SD | 2.0 ± 1.2 | 1.9 ± 1.2 | 2.1 ± 1.2 | 2.0 ± 1.2 | 2.2 ± 1.3 | 2.1 ± 1.3 | 1.9 ± 1.2 |
Frailty statusf, no. (%) | |||||||
 Robust | 208 (30.3) | 105 (31.0) | 103 (29.6) | 60 (29.3) | 19 (28.8) | 25 (37.3) | 23 (34.3) |
 Pre-frail | 402 (58.5) | 206 (60.8) | 196 (56.3) | 123 (60.0) | 40 (60.6) | 36 (53.7) | 33 (49.3) |
 Frail | 77 (11.2) | 28 (8.2) | 49 (14.1) | 22 (10.7) | 7 (10.6) | 6 (9.0) | 11 (16.4) |