Table 3.

Association between Demographics Factors Related to Postpartum Relapse on Actual Relapse Postpartum (Pregnant Quitters Only; n=46)

	Relapse in Postpartum Unadjusted Mean (SE) or n (%)		RR of Relapse (95% CI)	p-value
	No	Yes
N	23 (50%)	23 (50%)
Age	28.13 (1.00)	24.78 (1.08)	0.94 (0.88 - 0.99)	0.0211
Race, white race vs all others	14 (64%)	14 (61%)	0.94 (0.53 - 1.69)	0.8473
Education, at least 4yr college degree vs. < 4yr college degree	6 (26%)	2 (9%)	0.44 (0.13 - 1.53)	0.1985
Average CPD in 3 months prior to pregnancy	10.26 (0.86)	10.72 (1.08)	1.01 (0.95 - 1.09)	0.7022
Month of pregnancy quit smoking	3.57 (0.50)	3.70 (0.49)	1.01 (0.90 – 1.14)	0.8510
Number of minutes before 1st cigarette in morning, Risk of relapse for each 30 min increment	62.26 (16.15)	58.67 (18.45)	0.99 (0.87 - 1.12)	0.8702
Likelihood of returning to smoking after pregnancy, 1-5 with 5 as not at all likely to smoke	4.09 (0.18)	3.57 (0.15)	0.75 (0.57 - 0.99)	0.0421
Partner smoking status, smoker vs. nonsmoker	6 (26%)	12 (60%)	2.07 (1.07 - 4.00)	0.0307
Number of pregnancies¹	2.39 (0.31)	1.83 (0.21)	0.99 (0.73 - 1.35)	0.9562
Number of living children¹	1.00 (0.22)	0.35 (0.12)	0.58 (0.33 – 1.00)	0.0519
Intention to breastfeed (yes vs. no)	13 (57%)	18 (78%)	1.74 (0.80 - 3.79)	0.1605
Smoking Abstinence Self-Efficacy Scale – Overall	4.02 (0.15)	3.71 (0.17)	0.76 (0.53 - 1.09)	0.1390
SCPS Smoking Cessation Process of Change Scale (SCPS) – Overall	2.59 (0.15)	2.72 (0.13)	1.14 (0.76 - 1.69)	0.5300
SCPS Experiential Process	2.50 (0.15)	2.67 (0.13)	1.20 (0.78 - 1.86)	0.3981
SCPS Behavioral Process	2.68 (0.16)	2.77 (0.14)	1.08 (0.75 - 1.56)	0.6826
Reasons for Quitting, Intrinsic Motivation	6.17 (0.34)	6.00 (0.47)	0.96 (0.79 - 1.17)	0.6862
Reasons for Quitting, Extrinsic Motivation	3.70 (0.32)	3.78 (0.31)	1.02 (0.84 - 1.23)	0.8400

p-values are from relative risk regression models adjusted for treatment randomization; each row is its own model; RR is risk of relapse in first 12 weeks postpartum;

Also adjusted for age