Healthy People 2010, measure 16-6a.
1.61a Percent of pregnant women receiving prenatal care in the first trimester, United States, 1998 and 2002.
1.61b Percent of pregnant women receiving prenatal care in first trimester, by State, 1998 and 2002.
Centers for Disease Control and Prevention, National Center for Health Statistics, National Vital Statistics System—Natality.
Number of live births.
Mothers of liveborn infants receiving prenatal care in the first trimester (3 months) of pregnancy.
A description of the primary measurement used to determine the fetus' gestational age (the interval between the first day of the last normal menstrual period and the birth) has been published by the NCHS. Go to http://www.cdc.gov/nchs for more information about linked birth and infant death data.