Table 3.

Characteristics of never smokers^a at baseline,^b by e-cigarette use, PATH Study (n = 5762), United States, 2013-2014^c,d

Characteristic	Never Tried an E-Cigarette, % (95% CI)	Has Tried an E-Cigarette, No Past 30-Day Use, % (95% CI)	Past 30-Day E-Cigarette Use, % (95% CI)	P Valuee
Overall	98.5 (98.2-98.7)	1.1 (0.9-1.3)	0.4 (0.3-0.6)	—f
Age				<.001
18-34	96.5 (95.8-97.1)	2.4 (1.9-2.9)	1.1 (0.8-1.5)
≥35	99.6 (99.4-99.7)	0.3 (0.2-0.5)	0.1 (0.0-0.2)
Race/ethnicity				.61
Non-Hispanic white	98.5 (98.2-98.8)	1.0 (0.8-1.3)	0.4 (0.3-0.6)
Non-Hispanic black	98.5 (97.9-98.9)	1.2 (0.8-1.8)	0.3 (0.2-0.5)
Otherg	98.3 (97.5-99.9)	1.0 (0.6-1.8)	0.6 (0.3-1.2)
Sex				<.001
Male	97.8 (97.3-98.3)	1.5 (1.1-1.9)	0.7 (0.5-1.0)
Female	98.9 (98.6-99.1)	0.8 (0.7-1.0)	0.3 (0.2-0.4)
Lives with a smoker				.001
Yes	97.9 (97.3-98.4)	1.4 (1.0-1.8)	0.7 (0.5-1.2)
No	98.7 (98.4-98.9)	1.0 (0.8-1.2)	0.3 (0.3-0.5)
Smoking in home				<.001
Allowed	98.8 (98.5-99.0)	0.9 (0.7-1.1)	0.3 (0.2-0.4)
Allowed with limits	94.9 (92.5-96.6)	3.0 (1.8-5.0)	2.1 (1.2-3.7)
Not allowed	97.3 (95.3-98.4)	1.8 (0.9-3.7)	0.9 (0.4-2.0)

Abbreviation: PATH, Population Assessment of Tobacco and Health.

^a Defined as adults who had never smoked a combustible cigarette, even 1 or 2 puffs.

^b Baseline was from September 13, 2013, through December 14, 2014.

^c Data source: US Department of Health and Human Services, National Institutes of Health, National Institute on Drug Abuse; US Food and Drug Administration, Center for Tobacco Products.³⁴

^d Any “don’t know” or “refused to answer” categories were excluded.

^e P values were from the Pearson χ² test of equal proportions. P < .05 was considered significant.

^f No statistical test or P value for the overall percentages.

^g Hispanic, American Indian/Alaska Native, Asian Indian, Chinese, Filipino, Japanese, Korean, Vietnamese, other Asian, Native Hawaiian, Guamanian or Chamorro, Samoan, other Pacific Islander, or multiple races.