Table 3.

Proportion and OR of smoking cessation by last trimester among women who were smoking in 3 months before pregnancy and pregnant before or during a national media campaign: Indiana, Kentucky, Ohio, 2009–2013

	Precampaign* (%) (n=209 053)	During campaign† (%) (n=60 747)	p Value	Crude OR (95% CI)	Adjusted OR (95% CI)‡
Smoking cessation by last trimester	32.9	34.7	<0.0001	1.08 (1.06 to 1.10)	1.07 (1.05 to 1.10)

*Women who smoked in the 3 months before pregnancy and delivered prior to the Tips 2012 campaign (1 January 2009 to 18 March 2012).

†Women who smoked in the 3 months before pregnancy and for whom there was temporal overlap between the Tips 2012 campaign and the period including her pregnancy (first and second trimesters) and the preceding 3 months.

‡Adjusted for maternal age; race; education; marital status; parity; Woman, Infants and Children enrolment; prepregnancy body mass index; insurance status; state; and cigarettes smoked before pregnancy (n=256 886).