Table 1 Demographic characteristics and co-prescription of benzodiazepines and stimulants per average opioid dosage groups
|  | < 50 MME | 50 to 90 MME | > = 90 MME | p-value |
|---|---|---|---|---|
Female | 442,574 (54.2%) | 800 (45%) | 477 (38%) | < 0.001 |
Age at 2010, mean (+ SD) | 49.3 (+ 17.8) | 52.2 (+ 17.3) | 50.4 (+ 16.4) | < 0.001 |
Any benzodiazepine prescription | 361,447 (44.2%) | 1489 (83.7%) | 1082 (86.1%) | < 0.001 |
Any stimulant prescription | 26,157 (3.2%) | 170 (9.6%) | 172 (13.7%) | < 0.001 |
SES | Â | Â | Â | Â |
    Very Low | 51,404 (6.8%) | 37 (2.2%) | 24 (2%) | < 0.001 |
    Low | 226,346 (29.8%) | 679 (41.2%) | 473 (40%) | |
    Medium | 255,960 (33.7%) | 580 (35.2%) | 424 (35.8%) | |
    High | 173,825 (22.9%) | 283 (17.2%) | 213 (18%) | |
    Very High | 52,959 (7%) | 69 (4.2%) | 49 (4.1%) |