Measure Source

Healthy People 2010, measure 16-6a.

Tables

1.56a Percent of pregnant women receiving prenatal care in the first trimester, United States, 1998 and 2001.

1.56b Percent of pregnant women receiving prenatal care in the first trimester, by State, 1998 and 2001.

Data Source

Centers for Disease Control and Prevention, National Center for Health Statistics (NCHS), National Vital Statistics System - Natality.

Denominator

Number of live births.

Numerator

Mothers of live-birth infants receiving prenatal care in the first trimester (three months) of pregnancy.

Comments

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. See http://www.cdc.gov/nchs/linked.htm for more information.