Table 2.

Cessation rates* in women who smoked in the 3 months before pregnancy by exposure status to the Tips 2012 campaign, crude and standardised: Indiana, Kentucky, Ohio, 2009–2013

	Crude				Standardised*
	Unexposed	Exposed	Absolute change (%)†	Relative change (%)†	Unexposed	Exposed	Absolute change (%)†	Relative change(%)†
IN	32.2	33.5	1.3	3.9	32.1	33.0	0.9	2.7
KY	21.9	26.3	4.4	20.3	21.7	25.1	3.4	15.6
OH	38.2	39.4	1.3	3.4	37.8	38.8	1.0	2.6
Overall	33.0	34.8	1.8	5.4	32.8	34.3	1.5	4.4
IN+OH	36.1	37.4	1.3	3.6	35.8	36.8	0.9	2.6

The percentage of women who reported smoking >0 cigarettes per day for the 3 months before pregnancy and then reported smoking 0 cigarettes per day during the third trimester of pregnancy.

*Standardised for maternal age, race/ethnicity, education and parity using direct methods based on the 2009 first quarter population for each state for state-specific analyses and for the combined 2009 first quarter population for the combined analysis.

†All changes in cessation rates were significant at p<0.01.