First author | Year | Country | Studies included | Outcome indicators |
---|---|---|---|---|
Corbitt et al14 | 2018 | Australia | 24 | ①② |
Ortiz-Lucas M15 | 2013 | Spain | 10 | ①②③ |
Didari T16 | 2015 | Iran, China | 15 | ①② |
Zhang Y17 | 2016 | China | 21 | ①②③④ |
Yuan F18 | 2017 | USA | 5 | ①② |
Ford A C19 | 2014 | USA, UK, Canada | 43 | ①② |
Tiequn B20 | 2015 | China | 6 | ①②④ |
Li DQ21 | 2016 | China | 5 | ①②④⑤⑥ |
Zhao ZF22 | 2014 | China | 19 | ①②③④⑤ |
Shu XC23 | 2012 | China | 17 | ①②④ |
Yao L24 | 2012 | China | 12 | ①②⑥ |
Yue25 | 2015 | China | 17 | ①②③⑤ |
Lan Y26 | 2011 | China | 32 | ①② |
AMSTAR question | Yes | Part | No |
---|---|---|---|
1. Was an a priori design provided? | 12 | 1 | 0 |
2. Was a comprehensive literature search performed? | 5 | 5 | 3 |
3. Is it possible to replicate the search? | 8 | 5 | 0 |
4. Did the inclusion criteria permit gray literature? | 0 | 10 | 3 |
5. Was a list of studies (included and excluded) provided? | 0 | 0 | 13 |
6. Were the characteristics of the included studies provided? | 13 | 0 | 0 |
7. Was the scientific quality of the included studies assessed and documented? | 8 | 5 | 0 |
8. Were the methods used to combine the findings of studies appropriate? | 13 | 0 | 0 |
9. Was the effect size index chosen justified statistically? | 9 | 4 | 0 |
10. Was the likelihood of publication bias assessed? | 10 | 0 | 3 |
11. Was the conflict of interest included? | 6 | 0 | 7 |