|
| Included systematic reviews | Number of studies included | Efficiency effect (95% CI) | GRADE quality of evidence | Relegation factors |
|
| Yan Lun et al. 2015 [17] | 14 | OR = 5.32, 95% CI (3.82, 7.41) | Low | ①④ |
| Xiao Chao 2016 [18] | 7 | RR = 1.27, 95% CI (1.19, 1.36) | Low | ①⑤ |
| Li Nan et al. 2017 [19] | 8 | OR = 3.90, 95% CI (2.92, 5.20) | Low | ①④ |
| Lu RuLing et al. 2018 [20] | 11 | OR = 4.22, 95% CI (2.86, 6.23) | Very low | ①④⑤ |
| Xu LiFang et al. 2018 [21] | 18 | OR = 2.83, 95% CI (2.06, 3.88) | Very low | ①④⑤ |
| Xu Huayun et al. 2018 [22] | 13 | RR = 1.19, 95% CI (0.87, 1.63) | Low | ①⑤ |
| Huang Wenfang et al. 2018 [23] | 7 | OR = 2.63, 95% CI (1.67, 4.15) | Very low | ①④⑤ |
| Ji Lin 2019 [24] | 21 | OR = 3.38, 95% CI (2.59, 4.41) | Moderate | ① |
| Xie Peng Peng et al 2019 [27] | 14 | RR = 1.13, 95% CI (1.02, 1.24) | Moderate | ① |
| ZhongYizheng et al. 2019 [28] | 10 | RR = 1.27, 95% CI (1.13, 1.44) | Moderate | ① |
| Dong YuFang 2020 [29] | 31 | RR = 1.26, 95% CI (1.20, 1.32) | Moderate | ① |
| Li Nan et al. 2020 [30] | 4 | OR = 3.42, 95% CI (1.76, 6.64) | Very low | ①④⑤ |
| Lin BeiBei 2020 [32] | 18 | RR = 1.26, 95% CI (1.17, 1.36) | Very low | ①②④ |
| Chen JinMing et al. 2020 [33] | 6 | RR = 1.26, 95% CI (1.15, 1.37) | Low | ①④ |
| Huang Ting et al. 2020 [34] | 8 | RR = 1.25, 95% CI (1.13, 1.37) | Very low | ①④⑤ |
|
