| | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ |
|---|
Chrysos 2003[25] | LR | LR | LR | LR | LR | LR | LR |
Guérin 2007[26] | UR | UR | UR | LR | LR | LR | LR |
Strate 2008[27] | LR | LR | LR | LR | LR | LR | LR |
Booth 2008[28] | LR | LR | LR | LR | LR | LR | LR |
Shaw 2010[29] | LR | LR | LR | LR | LR | LR | LR |
Qin 2013[19] | HR | LR | UR | UR | LR | LR | LR |
Koch 2013[20] | LR | LR | HR | LR | LR | LR | LR |
Wang 2015[21] | LR | LR | LR | LR | LR | LR | LR |
- ①:Random sequence generation; ②:Allocation concealment; ③:Blinding of participants and personnel ④:Blinding of outcomes assessment; ⑤:Incomplete outcome data; ⑥:Selective reporting; ⑦:Other bias. LR low risk, UR unclear risk, HR high risk
