Table 2 Summary characteristics of N = 86 included Overviews
From: Database combinations to retrieve systematic reviews in overviews of reviews: a methodological study
| Â | Median | IQR | Range |
|---|---|---|---|
Databases searched | 6 | 4–8 | 1–25 |
SRs included per Overview | 8 | 5–17 | 1–103 |
| Â | n | % (of 86 Overviews) | |
Type: | |||
 Cochrane Overview | 3 | 3% |  |
 HTA report | 14 | 16% |  |
 non-Cochrane Overview | 69 | 80% |  |
| Â | n | % (of 1219 SRs) | |
Databases: | |||
 MEDLINE/PubMeda | 82 | 95% |  |
 Embase | 61 | 71% |  |
 DARE or Cochrane Library b | 59 | 69% |  |
 CINAHL | 36 | 42% |  |
 PsycINFO | 30 | 35% |  |
 HTA databases (any) | 20 | 23% |  |
 TRIP | 3 | 3% |  |
 Epistemonikos | 0 | 0% |  |
 Any other social science/economics database | 18 | 21% |  |
Other sources searched | 64 | 74% | Â |
Intervention Overviews | 61 | 69% | Â |
Mental health/psychology-related topic | 9 | 10% | Â |