Table 3.
Paired comparison between history and urine drug screen for each substance across the study cohort (n = 153).
| Substance | Agreement N (%) |
Disagreement N (%) |
||||
|---|---|---|---|---|---|---|
| HX + UDS + | HX − UDS − | Matched Pairs | HX+UDS − | HX − UDS + | Non-Matched Pairs | |
| 6-acetylmorphine | 2 (1.3) | 101 (66.0) | 103 (67.3) | 50 (32.7) | 0 (0) | 50 (32.7) |
| Amphetamine | 9 (5.9) | 136 (88.9) | 154 (94.8) | 6 (3.9) | 2 (1.3) | 8 (5.2) |
| Barbiturate | 0 (0) | 146 (95.4) | 146 (95.4) | 0 (0) | 7 (4.6) | 7 (4.6) |
| Benzodiazepine | 41 (26.8) | 60 (39.2) | 101 (66.0) | 14 (9.1) | 38 (24.8) | 52 (34.0) |
| Buprenorphine | 20 (13.1) | 110 (71.9) | 130 (85.0) | 18 (11.8) | 5 (3.2) | 23 (15.0) |
| Cannabinoids | 13 (8.4) | 111 (72.5) | 124 (81.0) | 1 (0.6) | 28 (18.3) | 29 (19.0) |
| Cocaine | 27 (17.6) | 97 (63.3) | 124 (81.0) | 6 (3.9) | 23 (15.0) | 30 (19.0) |
| Methadone | 17 (11.1) | 111 (72.5) | 128 (83.7) | 22 (14.3) | 3 (1.9) | 25 (16.3) |
| Opiates | 11 (7.2) | 76 (49.7) | 87 (56.9) | 0 (0) | 66 (43.1) | 66 (43.1) |
| Oxycodone | 9 (5.9) | 121 (79.1) | 130 (85.0) | 19 (12.4) | 4 (2.6) | 23 (15.0) |
| Phencyclidine | 0 (0) | 151 (98.7) | 151 (98.7) | 0 (0) | 2 (1.3) | 2 (1.3) |
Abbreviations: HX = history, UDS = urine drug screen, ‘+’ = present, ‘−‘ = not.