Table 5.

Logistic Regression Analysis Predictors of Quitting Smoking (Quit Ratio) in Lifetime Smokers Aged 25-44 (N = 9216)

Model†††	OR	95% CI	P value
Quit Smoking
Race/Ethnicity
Caucasian	1.0	Reference
African American	0.66	0.56, 0.78	<.001
Latino	0.84	0.63, 1.12	.24
Asian American	0.85	0.55, 1.30	.45
Gender
Female	1.0	Reference
Male	1.13	1.03, 1.25	.01
Marital status
Not married	1.0	Reference
Married	1.87	1.69, 2.08	<.001
Employment status
Full-time	1.0
Part-time/homemaker/student	1.31	1.16, 1.48	<.001
Out of work/disabled/retired	0.67	0.53, 0.85	.001
Time to first cigarette when smoking the most
> 30 minutes after waking	1.0	Reference
≤30 minutes after waking	0.55	0.50, 0.61	<.001
Cigarettes per day, when smoking the most‡‡‡	0.81	0.76, 0.86	<.001
Age	1.06	1.05, 1.07	<.001
Age of smoking initiation	0.96	0.95, 0.97	<.001
Education§§§	1.41	1.34, 1.49	<.001

OR, odds ratio; CI, confidence interval

^†††Logistic regression models controlled for site. All possible interactions for the variables selected for the multivariate model were tested, but were not statistically significant at the 0.05 level. A forced-entry simultaneous model of the significant covariates with race/ethnicity showed similar results.

^‡‡‡Cigarettes per day treated as an ordinal variable.

^§§§Education treated as an ordinal variable.