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OST treatment retention and outcomes over one year for a cohort of clients enrolled in May 2006 (n = 713)
| Retained on OST | Ceased - completed the program | Ceased - relapsed | Ceased - reason unknown | |
|---|---|---|---|---|
| n (%) | n (%) | n (%) | n (%) | |
| 3 months | 519 (72.8) | 18 (2.5) | 138 (19.4) | 38 (5.3) |
| 6 months | 451 (63.3) | 42 (5.9) | 166 (23.3) | 54 (7.6) |
| 9 months | 405 (56.8) | 60 (8.4) | 186 (26.1) | 62 (8.7) |
| 12 months | 362 (50.8) | 91 (12.8) | 196 (27.5) | 64 (9.0) |
