Table 3 Characteristics of systematic reviews included
Characteristics | N = 30 | |
|---|---|---|
Field of research, n (%) | Medicine | 27 (90) |
Surgery | 3 (10) | |
Impact factor, median; [Q1-Q3]; (min-max) | 4.60; [3.18–7.51]; (0.00-18.04) | |
No. of trials included, median; [Q1-Q3]; (min-max) | 13; [6–23]; (4–54) | |
Sample size, median; [Q1-Q3]; (min-max) | 2872; [801–11005]; (257–782460) | |
Experimental treatment, n (%) | Drugs | 16 (53) |
Complex intervention | 11 (37) | |
Surgery | 2 (7) | |
Device | 1 (3) | |
Meta-analysis included in the systematic review, n (%) | 26 (87) | |
Funding source, n (%) | Non-profit | 11 (37) |
For-profit | 2 (7) | |
None | 10 (33) | |
Not specified | 7 ((23) | |
Content of the original abstract, n (%) | Eligibility criteria | 17 (57%) |
Key data bases and date of search | 9 (30%) | |
Method to assess the risk of bias | 6 (20%) | |
No. and type of the studies included in the systematic review | 22 (73%) | |
Summary measure and confidence interval for the main outcome results* | 20/26 (77%) | |
Strength and limitation | 13 (43%) |