Table 1 Bibliographical characteristics of 102 included systematic reviews
Bibliographical characteristics | Resultsa |
|---|---|
Cochrane SRs | |
- Yes | 10 (9.8) |
- No | 92 (90.2) |
An update of a previous SR | |
- Yes | 14 (13.7) |
- No | 88 (86.3) |
Publication year | |
2014–2015 | 36 (35.3) |
2016–2018 | 29 (28.4) |
2019–2021 | 37 (36.3) |
Publication journal impact factor in the year before SR publication, median [range] | 3.26 [0.17,8.77] |
Number of review authors, median [range] | 5 [2,17] |
Location of the corresponding author | |
- Europe | 18 (17.6) |
- America | 12 (11.8) |
- Asia | 68 (66.7) |
- Oceania | 3 (2.9) |
- Africa | 1 (1.0) |
Funding location of the SR | |
- Europe | 15 (14.7) |
- America | 7 (6.9) |
- Asia | 35 (34.3) |
- Oceania | 2 (2.0) |
- No funding | 21 (20.6) |
- Not reported | 22 (21.6) |
Type of treatment | |
- Pharmacological treatments | 77 (75.5) |
- Non-pharmacological interventions | 19 (18.6) |
- Both types | 6 (5.9) |
Total number of included primary studies | 1158 |
Median number of included primary studies[range] | 7 [2,69] |
Total number of participants included in primary studies | 244,216 |
Median number of participants included in primary studies[range] | 926.5 [57,20132] |
SRs reporting intervention harmsb | 80 (78.4) |
Pharmacological treatments | 65 (84.4) |
Non-pharmacological interventions | 11 (57.9) |
Both types | 4 (66.7) |
SRs that search for English databases | 102 (100) |
SRs that search for non-English databases | |
- Yes | 51 (50.0) |
- No | 51 (50.0) |
Included a PRISMA-like flow diagram | |
- Yes | 87 (85.3) |
- No | 15 (14.7) |
Search terms reported for electronic databases | |
- No search terms reported | 2 (2.0) |
- Topics/free text/keywords/MeSH | 61 (59.8) |
- Full Boolean | 37 (36.3) |
- Readers are referred elsewhere for full search strategy | 2 (2.0) |
Report year span of search | |
- Yes, reported both starting and ending years | 50 (49.0) |
- Partially (only reported starting year or ending year) | 49 (48.0) |
- Not mentioned | 3 (2.9) |
Language restrictions of primary studies | |
- English only | 24 (23.5) |
- Language other than English | 1 (1.0) |
- English and language other than English | 53 (52.0) |
- Not reported | 24 (23.5) |
Methodological quality assessment tools | |
- Cochrane risk of bias tool | 67 (65.7) |
- Jadad scale | 8 (7.8) |
- Pedro Scale | 1 (1.0) |
- Delphi list | 1 (1.0) |
- More than one tools | 6 (5.9) |
- Other tools | 7 (6.9) |
- Name of the assessment tool not reported | 7 (6.9) |
- No quality assessment conducted | 5 (4.9) |