TABLE 3.

Multiple Logistic Regression Results Predicting Having Observed a Coworker Vape In/Around the Workplace

Sample Demographics, Tobacco Use and Workplace Characteristics	OR	95% CI
E-cigarette use
Current	Ref
Former	0.55†	0.35–0.85
Never	0.27†	0.18–0.41
Cigarette smoking
Current	Ref
Former	0.58‡	0.38–0.88
Never	0.43†	0.29–0.63
Age
18–30 years	0.76	0.54–1.08
31–45 years	Ref
46–65 years	0.75‡	0.56–1.00
Gender
Female	0.86	0.66–1.12
Male	Ref
Race/Ethnicity
Non-Hispanic, White	Ref
Non-Hispanic, Black	2.13†	1.39–3.27
Hispanic	1.50	0.99–2.26
Non-Hispanic, others	1.05	0.67–1.65
Household income
Less than $34,999	2.11†	1.32–3.39
$35,000–$49,999	1.39	0.94–2.05
$50,000–$74,900	1.34	0.95–1.88
$75,000–$99,999	1.53‡	1.08–2.15
$100,000 or greater	Ref
Education
High school/GED or less	1.07	0.71–1.61
Some college	1.00	0.73–1.36
Bachelor's degree	Ref
Graduate study or degree	0.78	0.56–1.08
Employer size
150–999 employees	Ref
1000–4999 employees	1.17	0.87–1.57
5000 or more employees	0.92	0.69–1.23
Industry
Health services	Ref
Retail	1.89†	1.19–3.00
Education	0.39†	0.25–0.62
Manufacturing	1.39	0.87–2.22
Information Technology	2.44†	1.43–4.16
Government & Non-Profit	1.00	0.63–1.57
Professional & Business Services	1.21	0.75–1.96
Financial Activities	1.55	0.93–2.56
Transportation & Warehousing	2.34‡	1.21–4.53
Other	1.78‡	1.10–2.88
State-wide policy∗
Covered state	0.98	0.76–1.27
Not covered State	Ref

Sample size included in model = 1556 because of some missing data on covariates.

CI, confidence interval; OR, odds ratio.

^∗State-wide policy refers to whether a state has a state-wide e-cigarette policy applying to workplaces.

^†P-value significant at the 0.01 level.

^‡P-value significant at the 0.05 level.