Table 5.
AMSTAR criteria for each included meta‐analysis
| Included studies | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Total score |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Handoll et al. (2013)12 | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | 11 |
| Li et al. (2013)16 | N | Y | N | Y | N | Y | Y | Y | Y | Y | Y | 8 |
| Mao et al. (2014)17 | N | Y | Y | Y | Y | Y | Y | Y | Y | N | Y | 9 |
| Jia et al. (2014)14 | N | Y | Y | Y | Y | Y | Y | Y | Y | N | Y | 9 |
| Fu et al. (2014)13 | N | Y | Y | Y | N | Y | Y | Y | Y | Y | Y | 9 |
| Sun et al. (2015)15 | N | Y | N | Y | N | Y | Y | Y | Y | Y | Y | 8 |
| Mao et al. (2015)18 | N | Y | Y | Y | N | Y | Y | Y | Y | Y | Y | 9 |
| Rabi et al. (2015)19 | Y | Y | Y | Y | N | Y | Y | Y | Y | Y | Y | 10 |
| Li et al. (2016)20 | N | Y | Y | Y | N | Y | Y | Y | Y | Y | Y | 8 |
| Du et al. (2017)21 | N | Y | Y | Y | N | Y | Y | Y | Y | Y | Y | 9 |
1: Was an a priori design provided?; 2: Was there duplicate study selection and data extraction?; 3: Was a comprehensive literature search performed?; 4: Was the status of publication (ie, grey literature) used as an inclusion criterion?; 5: Was a list of studies (included and excluded) provided?; 6: Were the characteristics of the included studies provided?; 7: Was the scientific quality of the included studies assessed and documented?; 8: Was the scientific quality of the included studies used appropriately in formulating conclusions?; 9: Were the methods used to combine the findings of studies appropriate?; 10: Was the likelihood of publication bias assessed?; 11: Was the conflict of interest stated?