Table 3. Clinical practice guidelines using a systematic or non-systematic approach to evidence syntheses (n = 50).
| Type of evidence synthesis | Guidelines n (%*) |
|---|---|
| Reviews: | 47 (94%) |
| Non-systematic reviews | 31 (62%) |
| • with qualitative synthesis | 22 (44%) |
| • with pairwise meta-analysis | 7 (14%) |
| • with network meta-analyses | 2 (4%) |
| Systematic reviews | 16 (32%) |
| • with qualitative synthesis | 11 (22%) |
| • with pairwise meta-analysis | 3 (6%) |
| • with network meta-analyses | 2 (4%) |
| Overviews: | 3 (6%) |
| Non-systematic overviews | 2 (4%) |
| • of reviews with non-statistical summary | 1 (2%) |
| • of guidelines with non-statistical summary | 1 (2%) |
| Systematic overview of reviews | 1 (2%) |
| • with non-statistical summary | 1 (2%) |
*Percentages do not sum to 100 as some guidelines used more than one approach.