Table 3. Subgroup analysis according to age, sex, EQ5D index, and presence of diabetes with multiple logistic regression analysis for the presence of depression.
| Subgroup | Variable | OR (95% CI) | P |
|---|---|---|---|
| Age | |||
| < 65 | Vitamin D deficiency | 398.57 (10.68–14867.71) | 0.001 |
| ≥ 65 | Vitamin D deficiency | 2.23 (0.49–10.01) | 0.30 |
| Sex | |||
| Female | Vitamin D deficiency | 42.88 (5.22–352.35) | <0.001 |
| Male | Vitamin D deficiency | 0.58 (0.05–6.25) | 0.65 |
| EQ5D index a | |||
| High | Vitamin D deficiency | 7.49 (1.41–39.74) | 0.02 |
| Low | Vitamin D deficiency | 3.91 (0.67–22.63) | 0.13 |
| Diabetes mellitus | |||
| No | Vitamin D deficiency | 18.94 (3.41–105.03) | 0.001 |
| Yes | Vitamin D deficiency | 5.00 (0.76–32.84) | 0.09 |
a Subgroup was divided according to EQ5D index. The mean values of EQ5D index were 0.98 and 0.71 in the high and low groups, respectively.