Table 2.
Unadjusted and adjusted odds ratios (OR) and 95% confidence intervals (CI) of asthma according to categories of participants’ pre-gravid body mass index Seattle and Tacoma, Washington, USA 1996–2008
| Body mass index (kg/m2)
|
P-value for trend | ||||
|---|---|---|---|---|---|
| Lean <18.5 (N=160) |
Normal 18.5–24.9 (N=2626) |
Overweight 25.0–29.9 (N=613) |
Obese ≥30.0 (N=338) |
||
| n (%) | n (%) | n (%) | n (%) | ||
| Asthma | |||||
| No, n (%) | 151 (94.4) | 2310 (88.0) | 508 (82.9) | 280 (82.8) | |
| Yes, n (%) | 9 (5.6) | 316 (12.0) | 105 (17.1) | 58 (17.2) | |
| Unadjusted OR (95%CI) | 0.44(0.22–0.86) | 1.00 (Reference) | 1.51(1.18 – 1.92) | 1.51(1.11–2.05) | <0.001 |
| * Adjusted OR (95%CI) | 0.43(0.21–0.84) | 1.00 (Reference) | 1.51(1.18 – 1.93) | 1.47(1.06 – 2.03) | <0.001 |
*
Adjusted for age, race/ethnicity, educational attainment, marital status, smoking, exercise status, history of chronic hypertension or diabetes mellitus, family history of diabetes and family history of hypertension