TABLE 1.

Descriptive Characteristics of US Adolescents: American Community Survey, 2006, and Monitoring the Future Study, 2006–2008

	Grade 8		Grade 10		Grade 12
	Adolescent Girls	Adolescent Boys	Adolescent Girls	Adolescent Boys	Adolescent Girls	Adolescent Boys
Drug use outcomes
Lifetime marijuana use, mean	0.126	0.158	0.288	0.323	0.397	0.443
Past-mo marijuana use, mean	0.050	0.063	0.123	0.153	0.159	0.213
Past-mo alcohol consumption, mean	0.164	0.155	0.318	0.317	0.417	0.466
Annual antidrug advertising exposure, depreciated TRPs,a mean	1360	1350	1360	1360	1370	1360
Individual characteristics
Race/ethnicity, mean
White	0.642	0.640	0.690	0.694	0.668	0.692
Black	0.158	0.144	0.140	0.129	0.153	0.123
Asian	0.047	0.054	0.050	0.050	0.045	0.053
Father's education, mean
≤High school	0.131	0.111	0.134	0.112	0.146	0.119
High school degree	0.226	0.221	0.254	0.249	0.269	0.257
Some college	0.122	0.128	0.141	0.147	0.170	0.170
College degree	0.342	0.372	0.359	0.387	0.334	0.373
Missing	0.168	0.154	0.107	0.098	0.075	0.069
Mother's education, mean
≤High school	0.119	0.087	0.115	0.088	0.120	0.092
High school degree	0.212	0.207	0.231	0.225	0.249	0.248
Some college	0.165	0.156	0.196	0.181	0.222	0.200
College degree	0.395	0.420	0.400	0.433	0.370	0.404
Missing	0.099	0.117	0.054	0.067	0.032	0.043
Total respondents, no.	22 995	22 145	23 448	21 981	20 750	18 926
Market characteristics
Population, no.	4 795 374	4 735 375	5 405 032	5 326 894	5 060 380	4 711 295
Median household income, $	50 382	50 311	51 542	51 644	50 491	50 327
Population with ≥ college degree, %	16.6	16.6	0.17.1	17.1	16.5	16.5
Median age, y	35.3	35.3	35.3	35.3	35.3	35.3
Renters, %	33.3	33.3	33.8	33.6	33.5	33.3

Note. TRPs = targeted rating points. Means are for the weighted sample. The data for drug use outcomes and individual characteristics came from the Monitoring the Future Study, 2006–2008. The data for the market characteristics came from the 2006 American Community Survey.

^a We used past 4 months of TRPs, with each month depreciated; λ = 0.3.