Table 4 AMSTAR 2 quality rating of included systematic reviews
|  | PICO research question | Protocol | Study design inclusion rationale | Comprehensive literature search | Duplicate study selection | Duplicate data extraction | List excluded studies + rationale | Adequate study characteristics | Satisfactory RoB Assessment | Funding source of studies | Appropriate meta-analysis | Study RoB impact on meta-analysis | Study RoB impact on conclusions | Heterogeneity explained, discussed | Publication bias assessed, discussed | Conflict of interest, funding declared |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Author, year | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
Wang et al. (2018) [23] | Y | N | N | PY | Y | Y | N | Y | Y | N | Y | N | N | Y | Y | Y |
Wei et al. (2020) [2] | Y | Y | N | PY | N | N | N | Y | Y | N | Y | N | Y | Y | N | Y |
Yang et al. (2020) [4] | Y | N | N | PY | Y | Y | N | PY | PY | N | N | N | N | N | N | Y |
Zou et al. (2019) [24] | Y | N | Y | Y | Y | Y | N | Y | PY | N | N | N | N | Y | Y | N |
Lim 2019 | Y | N | N | PY | Y | Y | N | PY | PY | N | N | N | N | N | N | Y |
Farhang 2019 [14] | Y | N | N | PY | Y | Y | Y | PY | PY | N | N | N | N | N | N | Y |
Zheng 2017 [3] | Y | N | N | PY | Y | Y | N | PY | N | N | N | N | N | Y | N | N |
Zhang et al. 2020 [16] | Y | N | N | PY | Y | Y | N | PY | Y | N | Y | N | N | Y | N | N |