Table 2.
Association between obesity and depressive symptoms according to BMI and WC
| Variables | No. of cases | Model 1 | Model 2 | Model 3 |
|---|---|---|---|---|
| OR (95% CI) | OR (95% CI) | OR (95% CI) | ||
| BMI (kg/m2) | ||||
| Continuous | 29,900 | 0.97 (0.96–0.99) | 0.97 (0.96–0.99) | 0.97 (0.95–0.98) |
| Category | ||||
| Underweight (< 18.5) | 779 | 1.44 (1.11–1.87) | 1.43 (1.11–1.86) | 1.41 (1.08–1.84) |
| Normal weight (18.5–23.9) | 12,365 | Reference | Reference | Reference |
| Overweight (24.0–27.9) | 11,668 | 0.89 (0.80–0.99) | 0.89 (0.80–0.99) | 0.87 (0.78–0.97) |
| General obesity (≥28.0) | 5088 | 0.90 (0.78–1.04) | 0.88 (0.77–1.02) | 0.86 (0.74–0.99) |
| P for trend | 0.003 | 0.002 | 0.001 | |
| WC (cm) | ||||
| Continuous | 29,900 | 0.99 (0.98–0.99) | 0.99 (0.98–0.99) | 0.99 (0.98–0.99) |
| Category a | ||||
| Normal WC | 15,143 | Reference | Reference | Reference |
| Abdominal obesity | 14,757 | 0.95 (0.86–1.04) | 0.85 (0.77–0.93) | 0.84 (0.76–0.93) |
Abbreviation: BMI body mass index; WC waist circumference
Model 1: unadjusted;
Model 2: adjusted for age and gender;
Model 3: adjusted for age, gender, educational level, marital status, average monthly income, physical activity, current smoking, current drinking and chronic disease (including coronary heart disease, stroke, hypertension, diabetes and dyslipidemia)
a Abdominal obesity was classified as WC ≥ 80 cm for women and WC ≥ 90 cm for men