Fig. 2From: Maternal exposure to life events during pregnancy and congenital heart disease in offspring: a case-control study in a Chinese populationSubgroup analysis of association between occurrence of life events and CHD. The ORs were estimated by multivariate logistic regression with the remaining covariates except the subgroup covariate adjusted. * p < 0.05; ** p < 0.01; *** p < 0.001Back to article page