Meconium aspiration syndrome: Incidence and outcomes using discharge data.

Background: Meconium aspiration syndrome (MAS) is a leading cause of morbidity and mortality among term, otherwise healthy newborns, yet population studies are rare. Definitions, outcomes and International Classification of Diseases (ICD) codes are heterogenous, complicating estimates of incidence, outcomes and risks.

Aims: To measure population incidence, risks and outcomes of MAS by ICD codes.