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Indices of respondent alcohol use by time
| Alcohol use variables | Time 1 M (SD) | Time 2 M (SD) |
| Past-year number of drinking days per month | 2.41 (4.70) | 5.16 (7.01) |
| Past-year number of heavy drinking days per month | 0.90 (2.49) | 2.10 (4.06) |
| Past-year maximum number of drinks in a day | 4.56 (5.08) | 6.62 (6.02) |
| Past-year number of alcohol-related consequences | 1.58(2.11) | 2.29 (2.37) |
