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Percentage of days using alcohol or drugs in each latent class across the first-year after treatment
| Assessment point | Frequent Positive (n = 27) | Limited Positive (n = 82) | Negative (n = 13) |
| Treatment entry | 69.73a | 61.21 | 72.59a |
| 6-week follow-up | 5.41 | 4.24 | 10.57a,b |
| 26-week follow-up | 11.17 | 9.62 | 18.33a,b |
| 52-week follow-up | 12.56 | 14.09 | 19.76b |
Small effect size vs Limited Positive;
small effect size vs Frequent Positive.
