Table 5 Agreement of self-reported heroin use and urine drug screens: MMT participants
| Â | Â | Urine drug screen results | Â | ||
|---|---|---|---|---|---|
Self-report | Negative | Time-points | Negative | Positive | Totals |
| Â | A | B | Â | ||
Baseline | 2/384 (1%) | 0/384 (0%) | 2/384 (1%) | ||
T1 | 294/384 (77%) | 46/384 (12%) | 340/384 (89%) | ||
T2 | 251/314 (80%) | 32/314 (10%) | 283/314 (90%) | ||
T3 | 258/302 (85%) | 26/302 (9%) | 284/302 (94%) | ||
T4 | 260/298 (87%) | 19/298 (7%) | 279/298 (94%) | ||
Positive | Â | C | D | Â | |
Baseline | 13/384 (3%) | 369/384 (96%) | 382/384 (99%) | ||
T1 | 23/384 (6%) | 21/384 (5%) | 44/384 (11%) | ||
T2 | 25/314 (8%) | 6/314 (2%) | 31/314 (10%) | ||
T3 | 12/302 (4%) | 6/302 (2%) | 18/302 (6%) | ||
T4 | 16/298 (5%) | 3/298 (1%) | 19/298 (6%) | ||