Table 4.

Relative Risks From Log-Binomial Regression Models for Smoking Onset by Sex, Race/Ethnicity and Period Cohort Among Adolescents and Young Adults Who Never Smoked 12 Months Prior to the Survey: NSDUH, 2006–2013: NSDUH, 2006–2013

	Male (n = 87 324)		Female (n = 92 755)
	RR (CI)	p	RR (CI)	p
Age group
Adolescent	1.00		1.00
Young adult	3.47 (3.04–3.97)	<.001	2.45 (2.14–2.82)	<.001
Race/ethnicity
White	1.00		1.00
Black	0.36 (0.26–0.51)	<.001	0.39 (0.28–0.55)	.001
Hispanic	0.56 (0.43–0.74)	<.001	0.37 (0.26–0.53)	<.001
Asian/PI	0.30 (0.12–0.76)	.012	0.20 (0.08–0.52)	<.001
Cohort
2006–2009	1.00		1.00
2010–2013	0.72 (0.61–0.85)	<.001	0.61 (0.52–0.72)	<.001
Race/ethnicity × 2010–2013
Black	0.82 (0.46–1.47)	.508	0.68 (0.37–1.22)	.195
Hispanic	0.92 (0.56–1.49)	.727	1.39 (0.84–2.31)	.200
Asian/PI	0.70 (0.17–2.97)	.633	1.38 (0.33–5.73)	.653
Young adult × 2010–2013 Cohort	1.19 (0.97–1.47)	.843	1.15 (0.92–1.43)	.208
Young adult × race/ethnicity
Black	1.31 (0.85–2.00)	.219	1.44 (0.96–2.19)	.081
Hispanic	0.95 (0.65–1.39)	.791	1.43 (0.93–1.93)	.113
Asian/PI	1.54 (0.54–4.34)	.417	2.61 (0.92–7.40)	.071
Young adult × 2010–2013 cohort × race/ethnicity
Black	1.50 (0.77–2.94)	.234	1.53 (0.77–3.02)	.222
Hispanic	1.35 (0.74–2.46)	.331	0.63 (0.34–1.18)	.148
Asian/PI	1.05 (0.22–5.14)	.950	0.75 (0.16–3.56)	.715

NSDUH = National Survey of Drug Use and Health. Never smokers were persons who reported “no” to ever smoking a cigarette 12 months prior to participating in the survey. Smoking onset were persons who reported smoking part or a whole cigarette for the first time within 12 months of the survey and doing so every day. Adolescents were persons between 12 and 17 and young adults between 18 and 25. Period cohorts were adolescents or young adults at the date of the 2006–2009 or 2010–2013 survey interview. Data were weighted with weights provided by NSDUH to approximate the US population of persons between the ages of 12–25.