Table 3: Quality assessment of included randomized controlled trials.

Included trialsSequence generationAllocation concealmentBlinding of participants personnel and outcome assessorsIncomplete outcome dataSelective outcome reportingOther sourcesof biasRisk of bias

Du et al. [8]UnclearUnclearUnclearYesNoUnclearHigh
Huang and Gan [9]UnclearUnclearUnclearNoNoUnclearHigh
Huo et al. [10]Table of random numberUnclearUnclearNoNoUnclearUnclear
J. Li et al. [11]UnclearUnclearUnclearYesNoUnclearUnclear
Liu and Chen [14]UnclearUnclearDouble blindYesNoUnclearUnclear
Li et al. [13]UnclearUnclearUnclearYesNoUnclearHigh
Liu and Chen [14]UnclearUnclearUnclearNoNoUnclearHigh
Luo et al. [15]Table of random numberUnclearDouble blindYesNoUnclearUnclear
Ma [16]Table of random numberUnclearUnclearYesYesUnclearUnclear
Wang et al. [17]UnclearUnclearUnclearNoNoUnclearHigh
Wang [18]UnclearUnclearUnclearNoNoUnclearHigh
Wang [19]UnclearUnclearUnclearNoNoUnclearHigh
Wang et al. [20]UnclearUnclearUnclearNoYesUnclearHigh
Wang and Liu [21]UnclearUnclearUnclearNoYesUnclearHigh
Wei et al. [22]UnclearUnclearUnclearNoYesUnclearHigh
Xian et al. [23]Table of random numberYesUnclearNoYesUnclearUnclear
Xiao [24]UnclearUnclearUnclearNoNoUnclearHigh
Yang and Xie [25]UnclearUnclearUnclearNoYesUnclearHigh
Yang et al. [26]Table of random numberUnclearUnclearNoNoUnclearUnclear
Zhai et al. [7]UnclearUnclearUnclearNoNoUnclearHigh
Zhang et al. [27]UnclearUnclearSingle-blindNo NoUnclearUnclear
Zhang [28]UnclearUnclearUnclearNoNoUnclearHigh
Zhao and Jiang [29]UnclearUnclearUnclearNoNoUnclearHigh
Zhou and Li [30]UnclearUnclearUnclearNoNoUnclearHigh
Zhu [31]UnclearUnclearUnclearNoNoUnclearHigh
Zhu and Li [32]UnclearUnclearUnclearNoNoUnclearHigh