TABLE 2.

Logistic regression of factors associated with quitting: only participants receiving follow-up carbon monoxide test (Baltimore, United States. 2015–2017).

Variables a	Quit (n)	Quit (%)	Unadjusted OR (95% CI)	Adjusted b OR (95% CI)
Arm
Self-Help (n = 122)	11	9.0	Ref
Single Session (n = 97)	10	10.3	1.2 (0.5–2.9)	1.2 (0.5–3.1)
Four Session (n = 152)	27	17.8	2.2 (1.0–4.6)	2.2 (1.0–4.9)
Sex
Female (n = 177)	23	13.0	Ref
Male (n = 194)	25	12.9	1.0 (0.5–1.8)	1.1 (0.6–2.0)
Age
<53 years (n = 172)	23	13.4	Ref
≥53 years (n = 194)	25	12.9	1.0 (0.5–1.8)	0.8 (0.4–1.5)
Race
African American (n = 320)	43	13.4	Ref
White (n = 39)	4	10.3	0.7 (0.2–2.2)	0.8 (0.3–2.5)
Other (n = 12)	1	8.3	0.6 (0.1–4.7)	0.5 (0.1–4.3)
Employment
Full-time (n = 37)	4	10.8	Ref
Part-time (n = 45)	5	11.1	1.0 (0.3–4.2)	0.9 (0.2–4.0)
Unemployed (n = 289)	39	13.5	1.3 (0.4–3.8)	1.0 (0.3–3.2)
Marital Status
Single (n = 268)	37	13.8	Ref
Married (n = 56)	6	10.7	0.7 (0.3–1.9)	0.8 (0.3–2.0)
Other (n = 47)	5	10.6	0.7 (0.3–2.0)	0.6 (0.2–1.8)
Education
Some high school or less (n = 107)	16	15.0	Ref
Graduated high school/GED (n = 175)	19	10.9	0.7 (0.3–1.4)	0.8 (0.4–1.6)
Some college or more (n = 89)	13	14.6	1.0 (0.4–2.1)	1.1 (0.5–2.7)
Fagerström
<5 (n = 157)	26	16.6	Ref
≥5 (n = 214)	22	10.3	0.6 (0.3–1.1)	0.5 (0.3–1.0)

^a A chi-square test of independence was performed for categorical variables (arm, sex, race, employment, marital status and education).

^b Adjusted for arm, sex, age, race, employment, marital status, education, Fagerström score.

^c Statistically significant based on alpha level of 0.05.