Table 4.
Risk of bias and quality of included RCTs.
Study year[ref] | Random sequence generation | Allocation concealment | Blinding of patient | Blinding of assessor | Incomplete outcome data | Selective reporting | Other bias | Jadad score |
---|---|---|---|---|---|---|---|---|
Sun XS 2005 (Sun, 2005) | U | U | H | H | L | U | L | 2 |
Wei GS 2007 (Wei and Qiang, 2007) | U | U | H | H | L | U | L | 1 |
Sun ZT 2008 (Sun et al., 2008) | L | U | H | H | L | U | L | 3 |
Dong H 2010 (Dong, 2010) | U | U | H | H | L | U | L | 1 |
Yang ZJ 2010 (Yang, 2010) | U | U | H | H | L | U | L | 2 |
Wang F 2011 (Wang, 2011) | U | U | H | H | H | U | H | 1 |
Chen P 2012 (Chen et al., 2012) | U | U | H | H | L | U | L | 1 |
Wu HS 2012 (Wu et al., 2012) | U | U | H | H | L | U | L | 1 |
Meng Y 2016 (Meng et al., 2016) | U | U | H | H | L | U | L | 1 |
Zhao YD 2016 (Zhao et al., 2016) | U | U | H | H | L | U | L | 1 |
Jiang WZ 2017 (Jiang, 2017) | U | U | H | H | L | U | L | 1 |
Miao G 2018 (Miao et al., 2018) | L | U | H | H | L | U | L | 2 |
Yang QM 2018 (Yang, 2018) | U | U | U | U | L | U | L | 2 |
Ma Q 2018 (Ma, 2018) | L | U | H | H | H | U | H | 3 |
Deng F 2018 (Deng and Wang, 2018) | U | U | H | H | L | U | L | 1 |
Guo SJ 2019 (Guo et al., 2019) | L | L | L | L | L | U | L | 5 |
Peng YF 2019 (Peng, 2019) | L | U | H | H | L | U | L | 3 |
RCT, randomized controlled trial; L, low risk of bias; H, high risk of bias; U, Unclear (uncertain risk of bias).