Table 2 Description of data collection process from clinical records of patients being prescribed methadone.
| Practice | Clinical records | Items with inter-observer disagreement/total | Workload (in number of three-hour sessions) involved in data collection to collect data | |
|---|---|---|---|---|
| Lead researcher | GP researcher | |||
| 2.0 | 1.0 | |||
| 7–12 | 7/34 | 1.5 | 1.0 | |
| 13–19 | 2/36 | 1.0 | 0.5 | |
| B | 20–38 | 0/39 | 3.0 | 0.5 |
| C | 39–57 | 0/39 | 2.0 | 0.3 |
