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Number of drinking and cannabis use days of alcohol only users, concurrent users, and simultaneous users.
| Time 1 (Fall) | Time 2 (Spring) | |||
|---|---|---|---|---|
|
| ||||
| Alcohol use only | M | SD | M | SD |
| Number of drinking days | 4.80 | 2.99 | 4.36 | 2.95 |
| Concurrent use | ||||
| Number of drinking days | 5.99 | 3.45 | 4.92 | 2.82 |
| Number of cannabis use days | 2.00 | 1.41 | 2.71 | 2.89 |
| Simultaneous use | ||||
| Number of drinking days | 8.44 | 3.49 | 7.27 | 3.85 |
| Number of cannabis use days | 7.57 | 7.76 | 8.18 | 8.28 |
