Table 1.
Characteristics of included studies.
| n (total = 61) | % | |
| Year of publication or substantive update | ||
| Median | 2001 | |
| Interquartile range | 1999–2001 | |
| Focus of the review | ||
| Treatment | 52 | 85.2 |
| Prevention | 7 | 11.5 |
| Diagnosis | 1 | 1.6 |
| Other | 1 | 1.6 |
| Study designs included | ||
| RCT only | 33 | 54.1 |
| RCT and quasiRCT | 24 | 39.3 |
| RCT and other controlled trials | 4 | 6.6 |
| Number of included studies per review | ||
| Median | 12 | |
| Interquartile range | 5.5–19.5 | |
| Review Group | ||
| Musculoskeletal Injuries | 13 | 21.3 |
| Eyes and Vision | 11 | 18.0 |
| Renal | 6 | 9.8 |
| Prostatic Diseases and Urologic Cancers | 5 | 8.2 |
| Back | 4 | 6.6 |
| Upper Gastrointestinal and Pancreatic Diseases | 3 | 4.9 |
| Skin | 3 | 4.9 |
| Other | 16 | 30.0 |