Adjusted odds ratios* for adult-onset current asthma by body mass index, stratified by abdominal obesity, among California Teachers Study cohort members
| Body mass index (kg/m2) | Not abdominally obese (waist circumference ⩽88 cm) | Abdominally obese (waist circumference >88 cm) |
| OR (95% CI) | OR (95% CI) | |
| Normal (18.5–24.9) | 1.00 (reference) | 1.37 (1.18 to 1.59) |
| Overweight (25–29.9) | 1.33 (1.20 to 1.47) | 1.67 (1.51 to 1.85) |
| Obese (⩾30) | 1.57 (1.21 to 2.03) | 2.36 (2.15 to 2.59) |
*Adjusted for race/ethnicity, age group and smoking.