Table 2:
Descriptives for key indicator and outcome variables.
| Total1,3 % (n) |
12th graders2,3 % (n) |
|||
|---|---|---|---|---|
| Key Indicator Variables | n = 25408 | n = 4359 | ||
| Diagnosed Concussion (lifetime) | ||||
| No Diagnosed Concussion (reference) | 81.6% | (19735) | 79.4% | (2956) |
| One Diagnosed Concussion | 13.4% | (3322) | 14.7% | (549) |
| Multiple Diagnosed Concussions | 5.0% | (1224) | 5.9% | (241) |
| Propensity Toward Sensation Seeking | ||||
| Low Sensation Seeking (reference) | -- | -- | 24.0% | (927) |
| Moderate Sensation Seeking | -- | -- | 40.3% | (1473) |
| High Risk Sensation Seeking | -- | -- | 35.7% | (1331) |
| Substance Use Outcomes | ||||
| Binge Drinking | ||||
| No Past Two-Week Binge Drinking | 91.9% | (21269) | 83.2% | (3251) |
| Past Two-Week Binge Drinking | 8.1% | (2038) | 16.8% | (740) |
| Cigarette Use | ||||
| No Past 30-Day Cigarette Use | 95.7% | (23317) | 90.6% | (3816) |
| Past 30-Day Cigarette Use | 4.3% | (1098) | 9.4% | (390) |
| Marijuana Use | ||||
| No Past 30-Day Marijuana Use | 88.1% | (21176) | 77.1% | (3166) |
| Past 30-Day Marijuana Use | 11.9% | (2981) | 22.9% | (937) |
| Illicit Drug Use | ||||
| No Past 30-Day Illicit Drug Use | 98.7% | (24310) | 97.1% | (4109) |
| Past 30-Day Illicit Drug Use | 1.2% | (335) | 2.9% | (127) |
| Nonmedical Rx Drug Use | ||||
| No Past 30-Day Nonmedical Rx Drug Use | 96.1% | (23486) | 95.5% | (4005) |
| Past 30-Day Nonmedical Rx Drug Use | 3.9% | (963) | 4.5% | (183) |
% = percent; n = sample size; Rx = prescription. Sample sizes vary due to missing data.
All percentages were estimated using custom weights provided by MTF to account for the probability of selection into the sample and to adjust for the different sample sizes for 8th, 10th, and 12th graders. Unweighted sample sizes are provided.
All percentages were estimated using custom weights provided by MTF to account for the probability of selection into the sample. Unweighted sample sizes are provided.
The percent of missing data from each item is the following: concussion 4.4% (12th grade sample 14.1%), sensation seeking 14.4% (12th grade sample only), binge drinking 8.3% (12th grade sample 8.4%), cigarette use 3.9% (12th grade sample 3.5%), marijuana use 4.9% (12th grade sample 5.9%), illicit drug use 3.0% (12th grade sample 2.8%), nonmedical prescription drug use 3.8% (12th grade sample 3.9%).