Maternal mortality ratios in the United States and California, 1999–2014 (A) and maternal mortality ratios in the United States and California restricted to maternal deaths due to other specified pregnancy-related conditions (O26.8) and other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth, and the puerperium (O99) (B). All rates shown, except the maternal mortality ratios in the United States, are 3-year moving averages.