Figure 1

Directed Acyclic Graph. The directed acyclic graph (DAG) above represents associations between covariates (including measured and unmeasured and the primary exposure (winter months) and outcome (infant gastroschisis).

Directed Acyclic Graph. The directed acyclic graph (DAG) above represents associations between covariates (including measured and unmeasured and the primary exposure (winter months) and outcome (infant gastroschisis).