Fig. 2From: Population-level factors associated with maternal mortality in the United States, 1997–2012Changes in maternal mortality rates by state – United States, 1997–2012. Rates are presented as maternal deaths per 100,000 live births. Change values were calculated by the authors based on 5-year moving averages for the years 1997 and 2012, based on data from the years 1995–2014Back to article page