Table 1. Sample Descriptives.
| Mean or % | SE | Range | |
|---|---|---|---|
| Outcomes | |||
| Any past 30-day marijuana use (N=332,586) | 15.5 | 0.179 | 0,1 |
| Any past 30-day IOTMa use (N=327,925) | 7.5 | 0.095 | 0,1 |
| Any disapproval of using marijuana regularly (N=291,524) | 84.3 | 0.157 | 0,1 |
| Perceive great risk in using marijuana regularly (N=318,616) | 67.3 | 0.238 | 0,1 |
| Perceived ability to obtain marijuana fairly easy/easy (N=278,933) | 72.3 | 0.379 | 0,1 |
| Recall anti-drug ads on TV or radio at least weekly (N=141,544) | 63.7 | 0.276 | 0,1 |
| Anti-Drug Ad Exposureb | |||
| Total anti-drug advertising (1995-2006; N=337,918) | 33.9 | 0.311 | 0.6-89.4 |
| ONDCP tag-line advertising (1999-2006; N=309,190) | 3.3 | 0.076 | 0.0-17.9 |
| Partnership tag-line advertising (1995-2006; N=337,918) | 9.9 | 0.175 | 0.0-67.7 |
| Both ONDCP/Partnership tag-line advertising (1999-2006; N=309,190) | 19.7 | 0.289 | 0.0-49.6 |
| Non-marijuana-focused advertising (1999-2006; N=227,836) | 19.2 | 0.186 | 4.8-50.2 |
| Marijuana-focused advertising (1999-2006; N=227,836) | 19.4 | 0.233 | 4.4-49.0 |
| Control variables (N=337,918) | |||
| Male | 47.5 | 0.194 | 0,1 |
| Grade | |||
| 8th | 35.7 | 0.933 | 0,1 |
| 10th | 33.7 | 0.951 | 0,1 |
| 12th | 30.6 | 0.908 | 0,1 |
| Race/ethnicity | |||
| African American | 11.4 | 0.353 | 0,1 |
| Hispanic | 10.6 | 0.328 | 0,1 |
| Other | 13.4 | 0.237 | 0,1 |
| White | 64.6 | 0.546 | 0,1 |
| GPAc | 6.2 | 0.013 | 1-9 |
| Likely graduate from college | 87.0 | 0.187 | 0,1 |
| At least one parent has college degree | 72.3 | 0.311 | 0,1 |
| Any truancy (past 4 weeks) | 19.4 | 0.250 | 0,1 |
| 3+ nights out per week for recreation | 43.9 | 0.213 | 0,1 |
| Earned and other incomed | 28.5 | 0.251 | 0.0-166.3 |
| Region | |||
| Midwest | 25.3 | 0.860 | 0,1 |
| Northeast | 21.9 | 0.773 | 0,1 |
| South | 32.5 | 0.943 | 0,1 |
| West | 20.2 | 0.804 | 0,1 |
Notes: Weighted Ns provided in parentheses. Final sample defined as cases with valid data on total advertising, at least one outcome, and all noted control measures.
IOTM = illicit drugs other than marijuana. For 12th graders, this includes LSD, other hallucinogens, crack, other cocaine, heroin and/or any use of other narcotics, amphetamines, sedatives, or tranquilizers not taken under a doctor's orders. For 8th and 10th graders, the use of other narcotics and sedatives has been excluded.
All anti-drug advertising measures represent mean number of times advertising was seen by 100% of youth aged 12-17 in each market area in the six months preceding MTF survey administration.
Grade point average measured using a 9-item scale where a mean of 6.2 indicates a B (1=D or below, 2=C−, 3=C, 4=C+, 5=B−, 6=B, 7=B+, 8=A−, 9=A)
Individual earned and other income adjusted for the CPI82-84.