Maternal mortality ratios in low- and middle-income countries: a comparison of estimation methods and relationships with sociodemographic covariates

Maternal mortality ratio estimates are reproducible using different estimation methods in low- and middle-income countries. Only 30% of the low- and middle-income countries for which serial data are available are projected to meet the Sustainable Development Goal 3.1. Maternal mortality ratios are significantly lower in countries with sociodemographic characteristics that indicate a higher status for women.