| First author, year (reference no.) | Type | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | Score |
| Bao JL, 2019 [33] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Cao YF, 2020 [23] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Cheng L, 2017 [34] | RCT | Yes | Yes | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 8 | Chen YY, 2020 [22] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Hao ML, 2019 [31] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Li CF, 2017 [43] | RCT | Unclear | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Li L, 2020 [21] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Li L, 2020 [20] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Liu QH, 2020 [19] | RCT | No | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Liu QN, 2018 [40] | RCT | Unclear | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Li YF, 2015 [52] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Ma GZ, 2019 [29] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Peng Y, 2021 [15] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Tu Y, 2018 [39] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Wang L, 2019 [24] | RCT | Yes | Yes | Yes | No | Yes | Yes | Unclear | Yes | Yes | 7 | Wang Q, 2018 [38] | RCT | Unclear | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Wu P, 2019 [28] | RCT | Unclear | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Xu YL, 2020 [10] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Yao XQ, 2019 [27] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | You HQ, 2020 [18] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Yu F, 2020 [17] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Zhang JB, 2019 [26] | RCT | Unclear | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Zhang N, 2018 [37] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Zhang RT, 2016 [47] | RCT | Unclear | Unclear | Unclear | Yes | Yes | Yes | Unclear | Yes | Yes | 5 | Zhang XH, 2019 [25] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Zhang Y, 2018 [36] | RCT | No | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Zhao FY, 2018 [35] | RCT | Yes | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 7 | Cheng LL, 2019 [32] | Non-RCT | Unclear | Unclear | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Li YJ, 2019 [30] | Non-RCT | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Ouyang HG, 2019 [9] | Non-RCT | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Pan JY, 2015 [51] | Non-RCT | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Qiao W, 2014 [53] | Non-RCT | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Shi M, 2016 [45] | Non-RCT | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Wang N, 2021 [14] | Non-RCT | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Yang FH, 2017 [41] | Non-RCT | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Zhang Y, 2016 [46] | Non-RCT | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Zhong Y, 2020 [16] | Non-RCT | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Chen GM, 2013 [54] | CBA | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Gao YY, 2017 [44] | CBA | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Hu GS, 2016 [49] | CBA | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Li SF, 2010 [55] | CBA | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Liu XM, 2016 [48] | CBA | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Su QX, 2017 [42] | CBA | No | No | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | 6 | Wen XQ, 2015 [50] | CBA | No | No | Yes | Yes | No | Yes | Unclear | Yes | Yes | 5 |
|
|