Table 2.
Predictors of vitamin D insufficiency in patients with dementia with Vitamin D supplementation: binary logistic regression analyses
| 25(OH)D1 < 50 nmol/L | 25(OH)D ≥50 nmol/L | P-value | OR | 95% CI | |
|---|---|---|---|---|---|
| N | 16 | 55 | |||
| Gender, % (n) | 0.9 | ||||
| Male | 25 (12) | 23 (13) | |||
| Female | 75 (4) | 76 (42) | |||
| Age in years, mean (SD) | 83 (SD 8) | 83 (SD 7) | 0.9 | ||
| Subjects with sunlight exposure >1x/week, % (n) | 25 (4) | 44 (24) | 0.1 | ||
| Drops/capsules, % (n) | <0.0001 | 35.3 | 7.7-160.9 | ||
| - drop users | 81 (13) | 11 (6) | |||
| - capsule users | 19 (3) | 89 (49) | |||
| No. of medications, % (n) | 0.8 | ||||
| <5 | 75 (12) | 72 (40) | |||
| >5 | 25 (4) | 27 (15) | |||
| FAC2, % (n) | 0.3 | ||||
| 0 | 25 (4) | 42 (23) | |||
| 1 | 6 (1) | 13 (7) | |||
| 2 | 19 (3) | 9 (5) | |||
| 3 | 31 (5) | 9 (5) | |||
| 4 | 13 (2) | 24 (13) | |||
| 5 | 6 (1) | 4 (2) | |||
| BMI3, (n) | 0.3 | ||||
| <20 underweight | 56 (9) | 55 (30) | |||
| 20-25 healthy weight | 25 (4) | 36 (20) | |||
| >25 overweight | 19 (3) | 9 (5) | |||
| MDRD4, % (n) | 0.6 | ||||
| <60 | 37 (6) | 29 (16) | |||
| >60 | 62 (10) | 71 (39) | |||
| Comorbidity5, % (n) | 0.02 | 0.2 | 0.07-0.8 | ||
| ≤ 2 diseases | 50 (8) | 80 (44) | |||
| >2 diseases | 50 (8) | 20 (11) | |||
125(OH)D −25-hydroxyvitamin D.
2FAC - Functional Ambulation Classification.
3BMI - Body Mass Index.
4MDRD - Modification of Diet in Renal Disease.
5Chronic diseases from seven majors: chronic obstructive pulmonary disease, cardiac disease, peripheral arterial disease, stroke, diabetes mellitus, rheumatoid arthritis/osteoarthritis and cancer.