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. 2014 Aug 14;17(3):330–336. doi: 10.1093/ntr/ntu156

Table 2.

Perceived Harm of E-Cigarettesa

Harm of e-cigarettes, compared to cigarettes, % (95% CI)b
Less Equally More Don’t know
Overall 34.2 (32.8, 35.6) 17.5 (16.7, 18.4) 3.2 (2.8, 3.6) 45.0 (43.8, 46.3)
Sex
 Male 38.8 (37.2, 40.4) 14.9 (13.9, 15.8) 3.5 (3.0, 4.0) 42.9 (41.5, 44.4)
 Female 29.4 (27.8, 31.1) 20.4 (19.1, 21.7) 2.9 (2.5, 3.4) 47.3 (45.6, 48.9)
Race/ethnicity
 Non-Hispanic White 37.4 (35.7, 39.0) 17.8 (16.7, 19.0) 2.0 (1.7, 2.4) 42.8 (41.3, 44.3)
 Non-Hispanic Black 30.6 (28.4, 32.9) 14.7 (13.0, 16.4) 5.8 (4.6, 7.3) 49.0 (46.4, 51.5)
 Hispanic 29.3 (26.9, 31.8) 18.1 (16.6, 19.8) 4.3 (3.6, 5.3) 48.2 (45.6, 50.9)
 Non-Hispanic Asian 26.1 (22.9, 29.5) 17.2 (14.5, 20.2) 3.5 (2.2, 5.6) 53.3 (48.3, 58.2)
 Other/multiple 36.4 (33.1, 39.8) 19.2 (17.0, 21.7) 3.3 (2.3, 4.7) 41.1 (37.8, 44.5)
Age
 ≤ 12 31.2 (28.4, 33.0) 14.9 (13.3, 16.8) 3.6 (2.9, 4.5) 50.3 (48.3, 52.3)
 13 34.6 (32.01, 37.1) 17.0 (15.2, 19.1) 3.2 (2.4, 4.1) 45.3 (43.0, 47.6)
 14 35.3 (32.7, 38.0) 16.7 (14.8, 18.7) 3.3 (2.3, 4.7) 44.8 (42.6, 46.9)
 15 34.9 (32.1, 37.9) 17.8 (16.1, 19.5) 3.7 (2.8, 4.9) 43.6 (40.9, 46.3)
 16 36.1 (33.8, 38.5) 19.3 (17.2, 21.6) 2.6 (2.0, 3.3) 42.0 (39.9, 44.1)
 ≥ 17 33.9 (31.6, 36.3) 19.2 (17.9, 20.5) 3.0 (2.4, 3.7) 44.0 (41.6, 46.4)
E-cigarette use, ever
 No 31.0 (29.8, 32.3) 18.0 (17.2, 18.9) 3.1 (2.7, 3.6) 47.9 (46.7, 49.0)
 Yes 71.8 (69.0, 74.5) 12.5 (10.7, 14.6) 4.2 (3.1, 5.5) 11.5 (9.5, 13.9)
E-cigarette use, current
 No 33.1 (31.8, 34.4) 17.7 (16.9, 18.6) 3.1 (2.7, 3.6) 46.1 (44.9, 47.3)
 Yes 73.8 (68.5, 78.5) 12.1 (9.3, 15.5) 5.0 (3.0, 8.2) 9.2 (5.8, 14.2)

aIncludes individuals who had “ever heard of…Electronic cigarettes or E-cigarettes, such as Ruyan or NJOY” from a list of alternative tobacco products.

bWeighted row percentages are displayed, with 95% CIs calculated by Taylor series linearization to account for the complex survey design.