1Maternal and Child Health Bureau, Health Resources and Services Administration Department of Health and Human Services, Rockville, Maryland
2Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention Department of Health and Human Services, Atlanta, Georgia
3Commissioned Corps Public Health Service Department of Health and Human Services, Rockville, Maryland
4Center for Financing, Access and Cost Trends, Agency for Healthcare Research and Quality Department of Health and Human Services, Rockville, Maryland
5West Virginia University, School of Public Health, Morgantown
6formerly with the Center for Financing, Access and Cost Trends, Agency for Healthcare Research and Quality Department of Health and Human Services, Rockville, Maryland at the time of analysis