Table 1.

Distribution of Responses to Youth Nicotine Beliefs and Perceptions, Weighted Percent, 95% Confidence Intervals, and Unweighted Sample Size, PATH Study Wave 4

	Nicotine beliefs
	Nicotine is the main substance that causes smoking-related cancer (%, 95% CI) N = 14 780	Nicotine is the main substance that causes addiction (%, 95% CI) N = 14 776
1 = Definitely yes	25.99 (25.11, 26.88) n = 3986	33.71 (32.65, 34.79) n = 4924
2 = Probably yes	48.71 (47.77, 49.66) n = 7178	46.40 (45.36, 47.45) n = 6764
3 = Probably not	14.96 (14.31, 15.63) n = 2104	8.72 (8.32, 9.13) n = 1347
4 = Definitely not	6.62 (6.21, 7.06) n = 996	8.12 (7.67, 8.58) n = 1301
Don’t know	3.72 (3.28, 4.23) n = 516	3.05 (2.72, 3.43) n = 440

Nicotine perceptions
	Harm of nicotine in cigarettes (%, 95% CI) N = 14 778	Harm of nicotine in e-cigarettes (%, 95% CI) N = 14 775	Harm of nicotine in NRT (%, 95% CI) N = 14 774
1 = Not at all harmful	1.09 (.92, 1.30) n = 162	1.64 (1.42, 1.88) n = 242	2.66 (2.37, 3.00) n = 391
2 = Slightly harmful	2.40 (2.08, 2.77) n = 347	6.99 (6.54, 7.47) n = 1025	11.91 (11.21, 12.65) n = 1682
3 = Somewhat harmful	10.85 (10.25, 11.48) n = 1605	21.76 (20.94, 22.61) n = 3194	25.77 (25.05, 26.50) n = 3736
4 = Very harmful	29.63 (28.65, 30.62) n = 4366	28.46 (27.68, 29.26) n = 4226	23.32 (22.55, 24.11) n = 3509
5 = Extremely harmful	54.98 (53.89, 56.06) n = 8147	39.99 (38.92, 41.06) n = 5910	34.23 (33.18, 35.30) n = 5144
Don’t know	1.05 (.88, 1.26) n = 151	1.16 (.99, 1.37) n = 178	2.10 (1.82, 2.42) n = 312

PATH = Population Assessment of Tobacco and Health Study.