Table 2.
Base line characteristics and the distribution of cases and controls
| Baseline characteristics | Number of cases | Number of controls |
|---|---|---|
| Age (years) | ||
| 45-60 | 57 | 69 |
| 61-70 | 18 | 20 |
| >70 | 26 | 11 |
| Sex | ||
| Male | 60 | 49 |
| Female | 42 | 51 |
| Residential status | ||
| Rural | 56 | 15 |
| Urban | 46 | 85 |
| Menopausal status | ||
| Premenopause | 8 | 10 |
| Postmenopause | 34 | 41 |
| Exposure to sunlight | ||
| >15 min daily | 85 | 70 |
| ≤15 min daily | 17 | 30 |
| Serum Vitamin D | ||
| Sufficient (>30 ng/dL) | 6 | 28 |
| Insufficient (10-30 ng/dL) | 80 | 72 |
| Deficient (<10 ng/dL) | 16 | 0 |
| Serum PTH | ||
| Hypoparathyroid (<10 pg/dL) | 0 | 0 |
| Normoparathyroid (10-65 pg/dL) | 34 | 75 |
| Hyperparathyroid (>65 pg/dL) | 68 | 20 |
| BMI (kg/m2) | 25.8±3.6 | 24.3±3.1 |
BMI=Body mass index, PTH=Parathyroid hormone