Maternal early warning criteria predict postpartum severe maternal morbidity and mortality after delivery hospitalization discharge: a case-control study.

Background: The predictors of postpartum severe maternal morbidity and mortality have not been well-described using patient-level data.

Objective: This study aimed to evaluate the application of maternal early warning criteria in the postpartum period and generate a preliminary predictive model for severe maternal morbidity and mortality occurring after delivery hospitalization discharge until 42 days postpartum.

Study Design: A retrospective case-control study was conducted from January 2013 to September 2020.