From: Methodological quality of systematic reviews on Chinese herbal medicine: a methodological survey
Bibliographical characteristics | Resultsa |
---|---|
Cochrane review | 2 (1.4) |
Non-Cochrane review | 146 (98.6) |
An update of previous SR | 12 (8.1) |
 An update of previous Cochrane review | 0 (0) |
 An update of a previous non-Cochrane review | 12 (8.1) |
Publication year median (range) | 2019 (2018-2020) |
Publication journal impact factor median (range) | 2.03 (0-7.76) |
Number of review authors median (range) | 6 (1-14) |
Location of corresponding author | |
 Europe | 2 (1.4) |
 Asia | 141 (95.3) |
 Oceania | 5 (3.4) |
Total number of included primary studies | 3022 |
Median number of included primary studies in each SR (range) | 16 (2-121) |
Total number of participants included in primary studies | 288,351 |
Median number of participants included in primary studies (range) | 1448.50 (100-11,732) |
SRs reporting intervention harms | 139 (93.9) |
Result of the first primary outcome of the SR | |
 No significant difference between CHM intervention and control | 12 (8.1) |
 In favour of CHM intervention | 32 (21.6) |
 In favour of CHM intervention with reservation | 104 (70.3) |
Funding location of the SR | |
 Europe | 6 (4.1) |
 Asia | 97 (65.5) |
 Oceania | 1 (0.7) |
 Not reported | 22 (14.9) |
 No funding support | 20 (13.5) |
 Multiple funding locations | 2 (1.3) |
Source of funding, if reported | |
 For-profit | 1 (0.8) |
 Not-for-profit | 105 (83.3) |
 No funding support | 20 (15.9) |
SRs that searched English databases | 145 (98.0) |
SRs that searched non-English databases | 139 (93.9) |
Report year span of search | |
 Yes, reported both starting and ending years | 111 (75.0) |
 Partially, only reported starting years | 29 (19.6) |
 Not mentioned | 8 (5.4) |
Search terms reported for one or more electronic databases | |
 Topics/free text/keywords/MeSH | 98 (66.2) |
 Full Boolean | 24 (16.2) |
 Readers are referred elsewhere for full search strategy | 21 (14.2) |
 No research term | 5 (3.4) |
Eligibility criteria based on language of publication | |
 English only | 1 (0.7) |
 Language other than English | 27 (18.2) |
 English and other languages | 16 (10.8) |
 Not reported | 104 (70.3) |
Risk of bias assessment tools | |
 Cochrane risk of bias tool | 130 (87.8) |
 Jadad scale | 14 (9.5) |
 CONSORT 2010 | 1 (0.7) |
 Newcastle-Ottawa Scale | 1 (0.7) |
 Tool not used | 2 (1.4) |
Included a PRISMA-like flow diagram | 147 (99.3) |