Odds ratio of allergic symptoms, asthma and hospitalisation due to asthma among offspring by maternal folic acid supplementation, China, 2000–2001
| Disease | Unadjusted odds ratio (95% CI) | Adjusted odds ratio (95% CI)# |
| Allergic symptoms | 0.75 (0.55–1.03) | 0.80 (0.58–1.11) |
| Asthma | 1.05 (0.68–1.63) | 1.04 (0.67–1.61) |
| Hospitalisation due to asthma | 0.69 (0.32–1.48) | 0.79 (0.35–1.77) |
#: Adjusted by age, only-child, education and occupation.