| Age-adjusted | Model 1a | Model 2b | |||
---|---|---|---|---|---|---|
RR (95% CI) | p | RR (95% CI) | p | RR (95% CI) | p | |
BMI (kg/m2) | ||||||
 BMI < 23 | 1 (reference) |  | 1 (reference) |  | 1 (reference) |  |
 23 ≤ BMI < 25 | 1.11 (0.93–1.59) | 0.190 | 1.24 (0.96–1.65) | 0.090 | 1.20 (0.96–1.63) | 0.102 |
 BMI ≥ 25 | 1.36 (1.07–2.00) | 0.020 | 1.44 (1.12–2.12) | 0.017 | 1.40 (1.08–2.04) | 0.025 |