Characteristics | All (n = 103) | Journal published (n = 52) | Non-journal published (n = 51) |
---|---|---|---|
Country of corresponding author or producer, n (%) | |||
 Canada | 42 (41) | 12 (23) | 30 (59) |
 United Kingdom | 21 (20) | 20 (38) | 1 (2) |
 Australia | 14 (14) | 4 (8) | 10 (20) |
 United States | 10 (10) | 3 (6) | 7 (14) |
 Belgium | 3 (3) | 2 (4) | 1 (1) |
 Scotland | 3 (3) | 1 (2) | 2 (4) |
 Italy | 2 (2) | 2 (4) | 0 |
 China, Denmark, Germany, Netherlands, Saudi Arabia, Spain, Sweden, Taiwana | 1 (1) | 1 (2) | 0 |
List of authors cited, n (%) | 89 (86) | 52 (100) | 37 (73) |
Reported funding, n (%) | 67 (65) | 39 (75) | 28 (55) |
Funding source, n | |||
 External, peer-reviewed grant | 8 | 6 | 2 |
 External, non-commercial (fee for service) | 47 | 22 | 25 |
 External, commercial (fee for service) | 2 | 2 | 0 |
 Internal | 1 | 0 | 1 |
 Specified no funding received | 9 | 9 | 0 |
Purpose or rationale for RR conveyed by the authors | 63 (61) | 33 (63) | 30 (59) |
Time to conduct the RR reported, n (%) | 6 (6) | 3 (6) | 3 (6) |
 4 weeks | 2 | 0 | 2 |
 8 weeks | 1 | 1 | 0 |
 17 weeks | 1 | 0 | 1 |
 24 weeks | 1 | 1 | 0 |
 32 weeks | 1 | 1 | 0 |
Main intervention, n (%) | |||
 Pharmacological | 17 (17) | 4 (8) | 13 (25) |
 Non-pharmacological | 57 (55) | 29 (56) | 28 (55) |
 Mixed | 5 (5) | 1 (2) | 4 (8) |
 Other (does not address an intervention or exposure) | 24 (23) | 18 (35) | 6 (12) |
Number of study designs included in the RRs, n (%) | |||
 One | 37 (36) | 14 (27) | 23 (45) |
 Two or more | 66 (64) | 38 (73) | 28 (55) |
Frequency of included study designs, nb | |||
 Systematic reviews | 40 | 15 | 25 |
 Randomised controlled trials | 41 | 17 | 24 |
 Observations studies (cohorts, case-control, cross-sectional) | 61 | 36 | 25 |
 Otherc | 37 | 21 | 16 |
 Unclear | 40 | 28 | 12 |
Peer reviewed, n (%) | 56 (54) | 50 (96)d | 6 (12)e |
RRs publicly available, n (%) | 86 (83) | 36 (69) | 50 (98) |
Journal Impact Factor, median (inter-quartile range)[range]f | n/a | 2 (1) [0.57–47.83] | n/a |
Language of the RRs in English, n (%) | 102 (99) | 52 (100) | 50 (98) |