Table 1.
Descriptive statistics of primary study variables.
| Sample | Males | Females | ||||
|---|---|---|---|---|---|---|
| Mean/% | SD/N | Mean/% | SD/N | Mean/% | SD/N | |
| Nicotine (Never Used) | 91.2 % | 281 | 92.7 % | 140 | 89.8 % | 141 |
| Alcohol (Never Used) | 65.9 % | 203 | 68.2 % | 103 | 63.7 % | 100 |
| Marijuana (Never Used) | 84.4 % | 260 | 83.4 % | 126 | 85.4 % | 134 |
| Other (Never Used) | 96.1 % | 296 | 96.0 % | 145 | 96.2 % | 151 |
| Any Drug (at least once) | 39.0 % | 120 | 35.8 % | 54 | 42.0 % | 66 |
| Future Orientation | 2.71 | 0.44 | 2.68 | 0.41 | 2.73 | 0.46 |
| Cognitive Style | 2.51 | 0.86 | 2.55 | 0.84 | 2.47 | 0.88 |
| Pubertal Timing | 0.00 | 1.08 | 0.00 | 1.05 | 0.00 | 1.11 |
| Pubertal Status | 2.69 | 0.70 | 2.33 | 0.59 | 3.04 | 0.61 |
Note: Higher scores on the pubertal timing measure indicate earlier pubertal timing; Higher scores on the cognitive style measure indicate more negative cognitive style; Higher scores on the Future Orientation measure indicate greater future orientation.