Beginning in 2021, MDH began using new race/ethnicity groups that makes these data not comparable to previous years. As a result, the prior disaggregated indicators have been added to the archived scorecard and new indicators were created with the new race/ethnicity subgroups. 

Unless otherwise specified, any missing data is either because there are no individuals who identify with the race/ethnicity or the data is suppressed to protect privacy. The race/ethnicity groups included in the indicator are as written in the original data source. The methodology for collecting information on the time during pregnancy that prenatal care began was changed in the 2010 revision of the Maryland birth certificate. As a result, prenatal care data collected after 2009 are not comparable to data collected in earlier years.