Table 4.
Crude and adjusted odds ratios and 95% CIs of osteoporosis for different BMI categories (optimal weight was chosen as a reference group, with assigned value = 1).
| BMI Category | OR 1 | p-Value | Adjusted OR 1,2 | p-Value |
|---|---|---|---|---|
| Optimal weight | 1 | 1 | ||
| Overweight | 1.52 (1.2–1.93) | <0.001 | 1.22 (0.93–1.6) | 0.151 |
| Grade 1 obesity | 1.85 (1.43–2.39) | <0.0001 | 1.4 (1.05–1.87) | <0.05 |
| Grade 2 obesity | 2.34 (1.67–3.27) | <0.0001 | 1.94 (1.27–2.97) | <0.01 |
| Grade 3 obesity | 2.76 (1.75–4.35) | <0.0001 | 2.51 (1.38–4.56) | <0.01 |
1 Significant linear trend with increasing BMI category, resultant p value of the score test for trend was <0.0001. 2 ORs adjusted for age, physical activity, and the use of drugs causing osteoporosis.