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Table 2 Association between obesity and depressive symptoms according to BMI and WC

From: Age and gender specific association between obesity and depressive symptoms: a large-scale cross-sectional study

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)

  1. Abbreviation: BMI body mass index; WC waist circumference
  2. Model 1: unadjusted;
  3. Model 2: adjusted for age and gender;
  4. 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)
  5. a Abdominal obesity was classified as WC ≥ 80 cm for women and WC ≥ 90 cm for men