Change Indicator

Mothers who received first trimester prenatal care (2007-2017) in Indiana

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Definition and Source



The percentage of pregnant women who began prenatal care during the first three months of pregnancy. Due to a change in data collection in 2007, cross time comparison between the two "series" of data is discouraged.

Data Source

Indiana State Department of Health, Epidemiology Resource Center, Data Analysis Team.

Original natality reports available at


Cross-time comparison of this indicator between the two series is discouraged. Indiana used the "1989 Standard Birth Certificate" from 1990 to 2006. Indiana started using the “2003” Revised Birth Certificate on January 1, 2007.

Before 2007, the prenatal care question asked for the month of pregnancy in which prenatal care began.

Beginning in 2007, the question now asks for the date of last normal menses and the date of the first prenatal visit.  The month prenatal care began is then calculated from these two variables. 

If the day of the month was unknown, the day of the month was calculated using a program that the National Center for Health Statistics (NCHS) has developed. NCHS has observed a decrease in the percent of mothers receiving care in the first month for all states who have adopted the revised certificate and considers it to be the result of better reporting.

For more info, please see the Preface of any Natality report released by the Indiana State Department of Health:

Data is for Calendar Year.

Last Updated

May 2019