Division for Community Health Improvement, Texas Department of State Health Services, Austin, the Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, and the Texas Department of State Health Services, Austin, Texas.
Corresponding author: Natalie P. Archer, PhD, Maternal & Child Health Epidemiology, Division for Community Health Improvement, Texas Department of State Health Services, 1100 W 49th Street, MC 1642, PO Box 149347, Austin, TX 78714; email: natal[email protected].
Supported by the Health Resources and Services Administration of the U.S. Department of Health and Human Services under Grant Number B04MC2937, Texas Title V Maternal and Child Health Services ($33,899,658, 100%).
Financial Disclosure The authors did not report any potential conflicts of interest.
The authors thank Ashley Hill for her help with this investigation. They also thank members of the Texas Department of State Health Services Center for Health Statistics for their help preparing needed data files and Victor Farinelli for his data support.
Each author has indicated that he or she has met the journal's requirements for authorship.