Table 1 Characteristics of the participants at baseline by study group
Variable | UV (all) (n = 23) | VD1 (n = 38) | p-value |
|---|---|---|---|
Gender %, (n) | |||
 Male | 26.1 (6) | 36.8 (14) | 0.39 a |
 Female | 73.9 (17) | 63.2 (24) |  |
Age in years, mean (SD) | 84.8 (6.8) | 83.5 (7.0) | 0.46 b |
Fitzpatrick skin scale %, (n) | |||
 1. Always burns easily, never tans | 0 | 2.6 (1) | 0.03 c |
 2. Always burns easily, tans slightly | 56.5 (13) | 73.7 (28) |  |
 3. Burns moderately, tans gradually | 34.8 (8) | 23.7 (9) |  |
 4. Burns minimally, tans moderately | 0 | 0 |  |
 5. Rarely burns, tans profusely | 8.7 (2) | 0 |  |
 6. Never burns, tans profusely | 0 | 0 |  |
Dementia severity, mean BANS-S (SD) | 16.0 (4.0) | 15.6 (5.1) | 0.75 b |
Baseline blood pressure, mmHg | |||
 Systolic, mean (SD) | 140.5 (25.4) | 130.0 (21.7) | 0.09 b |
 Diastolic, mean (SD) | 76.6 (9.9) | 74.1 (14.5) | 0.48 b |
 Using antihypertensive medication %, (n) | 43.5 (10) | 31.6 (12) | 0.35 a |
 Serum 25(OH)D3 levels, nmol/l, mean (SD) | 71.6 (24.9) | 77.4 (31.9) | 0.22 b |