comparison of this indicator between the two series is discouraged.
Indiana started using the “2003” Revised Birth Certificate on January
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: http://www.in.gov/isdh/19095.htm