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| Study | Reason for exclusion |
|---|---|
| Chambers 1977 | CBA design |
| Flynn 1974 | non‐randomised study |
| Gordon 1974 | CBA design |
| Irewall 2015 | Setting: mixed primary healthcare and hospital care |
| Kinnersley 2000 | non‐randomised study |
| Kuethe 2011 | Setting: mixed primary care and hospital medicine |
| McIntosh 1997 | Aimed at mental health problems (alcohol abuse and addiction) |
| Myers 1997 | CBA design |
| Stein 1974 | non‐randomised study |
CBA: controlled before‐after study.
