Aaron Hudson, Ali Shojaie
Statistical inference on qualitative differences in the magnitude of an effect
Statistics in medicine
maternal mortality data review important indicators effectiveness maternity healthcare systems impetus action recently rising incidence maternal mortality high income countries reported various publications raised concern data collection methods country level usually relies mainly national vital statistics therefore essential collected data complete accurate conform international definitions disease classification accurate data review truly available enhanced obstetric surveillance system place ebcog calls action national societies work closely respective ministries health ensure high quality surveillance systems place