Opioid drugs prescribed to opiate misusers by GPs in England and Wales, 2001.
| Drug | Mean daily dose, mg | SD | Range | IR |
|---|---|---|---|---|
| Methadone (n = 1159; md = 133) | 36.9 | 21.2 | 1.0–305.0 | 23.0–50.0 |
| Dihydrocodeine (n = 106; md = 20) | 206.8 | 171.4 | 30.0–960.0 | 90.0–240.0 |
| Buprenorphine (n = 42; md = 23) | 6.0 | 4.2 | 0.4–16.0 | 2.9–8.0 |
SD = standard deviation. IR = interquartile range. md = missing data.