Table 1.

Participant Characteristics, Wave 1 (2014–2015) and Wave 2 (2016–2017)

	Adolescents (age 13–17 y)				Adults (age ≥18 y)
	Wave 1 (n = 1125)		Wave 2 (n = 975)		Wave 1 (n = 5014)		Wave 2 (n = 4208)
	n	%	n	%	n	%	n	%
Smoking status
Nonsmoker	1085	97.0	948	97.2	3856	82.2	3234	85.0
Smoker	40	3.0	27	2.8	1151	17.8	973	15.0
Age (y)
13–17	1124	100	975	100	—	—	—	—
18–25	—	—	—	—	809	14.9	545	15.4
26–64	—	—	—	—	3397	67.6	2990	67.0
≥65	—	—	—	—	789	17.5	655	17.6
Sex
Female	564	48.7	491	49.9	2640	51.5	2276	51.4
Male	561	51.3	481	50.1	2372	48.5	1924	48.6
Gay, lesbian, or bisexual
No	1041	96.1	880	92.1	4730	96.8	3943	95.6
Yes	42	3.9	55	7.9	192	3.3	192	4.4
Race
African American	119	13.0	123	16.9	978	18.3	879	18.8
American Indian or Alaska Native	18	2.1	12	1.0	135	2.0	162	3.0
Asian or Pacific Islander	25	3.4	13	2.6	125	3.2	95	3.2
White	901	73.0	788	72.8	3473	68.3	2855	67.7
Other	62	8.4	39	6.7	270	8.2	189	7.3
Hispanic
No	1040	90.1	913	89.9	4568	85.8	3838	85.5
Yes	85	9.9	61	10.1	432	14.2	353	14.5
Attended college
No	218	20.9	208	22.4	1756	42.6	1489	41.6
Yes	731	79.1	681	77.6	3241	57.4	2602	58.4
Numeracy
Low	307	27.0	223	24.8	1599	31.9	1302	29.4
High	818	73.0	752	75.2	3401	68.1	2901	70.6
Appalachia resident
No	889	85.5	738	87.1	3987	91.2	3403	91.3
Yes	224	14.5	237	12.9	757	8.8	805	8.7
Chemical panel
1	188	16.1	171	17.6	790	16.5	705	16.6
2	192	16.0	152	14.2	849	17.4	736	15.5
3	171	16.1	161	16.8	837	17.1	701	16.7
4	182	16.6	170	19.5	779	15.0	701	17.5
5	191	17.3	150	14.3	897	17.3	645	15.0
6	201	18.1	171	17.6	862	16.7	720	18.6

Percentages are weighted. Wave 1 = 2014–2015; wave 2 = 2016–2017. For adolescents, attended college is based on mother’s highest level of education, smoking status is defined as having smoked during at least one of the past 30 days, and sexual orientation is sexual attraction to people of the same sex.