Nova Scotia Perinatal Health Indicator	
Tobacco smoking cessation during pregnancy; All Nova Scotia	
Data Source: Nova Scotia Atlee Perinatal Database	

Background: There is a wealth of research evidence on the adverse effects of smoking prior to and during pregnancy. Smoking in pregnancy increases the risk for preterm birth, small-for-gestational-age babies and fetal anomalies often associated with poor placental perfusion and placental insufficiency. Smoking also has significant long-term health implications for mothers and families. Both pharmacological and psychosocial smoking cessation interventions have been shown to be effective for pregnant women.	

Fiscal Year	Tobacco smoking² at the
time of the 1st prenatal visit	Quit smoking during
pregnancy	
2006-07	20.15	14.19	
2007-08	20.93	14.40	
2008-09	21.13	14.67	
2009-10	20.42	16.94	
2010-11	20.32	17.81	
2011-12	19.51	19.02	
2012-13	17.67	19.26	
2013-14	16.95	19.19	
2014-15	15.41	21.89	

Indicator Definition: Proportion of Nova Scotia women who reported that they were non-smokers at the time of admission for delivery, or at the time of delivery for women who had a home birth, among women who reported that they smoked tobacco at the time of their first prenatal visit (Note: timing of the first prenatal visit may vary).	
	Numerator = women who reported that they were non-smokers at the time of admission for delivery,	
	or at the time of delivery for women who had a home birth	
	Denominator = women who reported that they smoked tobacco at the time of their first prenatal visit	

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1 During pregnancy is defined as the time interval between the first prenatal visit and the time of admission for delivery/time of delivery	
2 Rates calculated assuming that an unavailable smoking status at either time point had the same value as at the other time