[Omission of causes of maternal death in death certificates in Argentina: nationwide observational studyOmissão do registro de causas maternas de morte na Argentina: estudo observacional de alcance nacional].

Objective: To determine the magnitude and characteristics of the omission of causes of maternal death in death certificates in Argentina, and to re-estimate the maternal mortality ratio (MMR) for the year 2014.

Methods: Cross-sectional study. Retrospective review of medical records of women of childbearing age who died from causes suspected of concealing maternal deaths in public, social security, and private institutions in all jurisdictions of the country between 1 January and 31 December 2014.