Table 1.
Study characteristics.
| Author (year) | Type of review | Number of studies included | Setting | Countries |
|---|---|---|---|---|
| Dwamena et al. (9) | Cochrane review of RCTs (update Lewin (8)) | 2000-2010: 30 1990-1999: 11 <1990: 2 |
Primary care: 35 Secondary or tertiary care: 13 |
USA: 15 UK: 9 Europe: 15 Other: 4 |
| Rathert et al. (14) | Systematic review of empirical studies | 2011-2012: 3 2000-2010: 32 1990-1994: 5 |
Not specified | USA: 14 UK: 5 Europe: 2 Other: 4 Unknown: 15 |
| McMillan et al. (15) | Systematic review of RCTs | 2011-2012: 4 2000-2010: 15 1990-1999: 7 <1990: 3 |
Primary care: 4 Hospital care: 2 Not specified: 23 |
Not specified |
| Park et al. (16) | Review of systematic reviews | 2011-2017: 28 <2011: 0 |
Not specified | USA: 9 UK: 6 Australia: 6 Other: |