Figure 1

Structural equation model for the interaction effect of oxytocin receptor gene (OXTR) rs53576 genotype × maternal postpartum depression on child behavioural problems. Solid lines indicate statistically significant paths (i.e., 95% confidence interval does not cross zero), while dashed line indicate non-significant paths. Covariates (child gender, gestational age, birth weight, maternal education, house income, and history of maternal affective disorder) were adjusted for in this model.