Table 5.

Risk of bias of included studies

	Randomization process	Deviations from intended interventions	Missing outcome data	Measurement of the outcome	Selection of the reported result	Overall
Li 2011 [25]
Li 2015 [22]
Wu 2021 [26]
Xing 2022 [27]
Wu 2022 [31]
Rashidi 2013 [30]
Altutunji 2019 [29]
Guo 2022 [24]
Ye 2020 [28]
Chen 2009 [23]
Li 2012 [32]
Li 2009 [33]

 Low risk

Someconcerns

 High risk