Table 2 Characteristics of systematic reviews (n = 29)
Systematic reviews | |
|---|---|
RCTs included per review, mean | 7 |
Publication date, mean (range) | 2004 (1998 to 2008) |
2 or more independent data extractors | 93% |
Active control | 37% |
Topic areas | |
Medicine | 59% |
Surgery (including anesthesia) | 15% |
Pediatrics | 15% |
Obstetrics | 11% |