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About the National Data
Baseline: 20.2 percent of females reported smoking cessation during pregnancy (i.e., they had smoked in their first or second trimesters but reported no smoking in their third trimester) in 2018
Target: 24.4 percent
Percentage point improvement
All entries are converted to the number of cigarettes (1 pack = 20 cigarettes). An entry of "0" indicates no cigarette use at that time period. If a mother reports smoking at any time during the three trimesters of pregnancy she is classified as a smoker (smoked anytime during pregnancy). Women with unknown smoking status for any trimester who report not smoking in the remaining trimesters are classified as "unknown smoking status". Women who report smoking in the three months prior to pregnancy but report not smoking during all three trimesters are considered to have quit before pregnancy. Women who report smoking only in the first trimester and/or second trimesters, but not the third trimester, are considered to have quit smoking during pregnancy and women who smoked in the first trimester, but not the second trimester (among births with gestational age less than 27 weeks) are also considered to have quit smoking during pregnancy. If smoking status during the third trimester of pregnancy is unknown, quitting status is classified as "unknown". Also, among women who give birth at gestational age less than 27 weeks, if smoking status for the second trimester is "unknown", quitting status is classified as "unknown".
In 2022, SAS programs were corrected to exclude persons with unknown gestational age, and as a result some estimates and standard errors may be different from what was previously displayed.
The baseline, baseline year and target were all not affected.
1. Effect size h=0.1 was chosen to correspond with 10% improvement from a baseline of 50%.