Table 1 Study characteristics
From: Characteristics and knowledge synthesis approach for 456 network meta-analyses: a scoping review
Study characteristics (n = 456) |  | Count (%) |
|---|---|---|
Year of publication | 1999–2002 | 3 (0.7) |
2003–2006 | 21 (4.6) | |
2007–2010 | 77 (16.9) | |
2011–2014 | 306 (67.1) | |
2015 (until April) | 49 (10.7) | |
Geographic region | Europe | 234 (51.3) |
North America | 140 (30.7) | |
Asia | 67 (14.7) | |
Central & South America | 6 (1.3) | |
Australia & New Zealand | 7 (1.5) | |
Africa | 2 (0.4) | |
Knowledge synthesis approach | Systematic review | 365 (80.0) |
Overview of reviews | 8 (1.8) | |
Narrative review | 1 (0.2) | |
Not reported | 82 (18.0) | |
Review duration (month) | <6Â months | 55 (12.1) |
6–12 months | 132 (28.9) | |
>12–24 months | 106 (23.2) | |
>24Â months | 81 (17.8) | |
Not reported | 82 (18.0) | |
Funding | Publicly-sponsored | 165 (36.2) |
Industry-sponsored | 100 (21.9) | |
Non-sponsored | 101 (22.1) | |
Industry and publicly sponsored | 8 (1.8) | |
Funding source not reported | 82 (18.0) | |
Full review method reporteda | Yes | 438 (96.1) |
No | 18 (3.9) | |
Number of trials included in review | Median (IQR) | 25 (14–48) |
Number of trials included in the network | Median (IQR) | 21 (13–40) |