Table 2.
Risk of bias assessment according to the SYRCLE’s risk of bias tool for animal studies.
| Studies | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Ayazi, 2014 [32] | - | - | ? | ? | ? | - | ? | ? | - | - |
| Bai et al., 2019 [33] | - | - | ? | ? | ? | ? | ? | ? | - | - |
| Dai et al., 2011 [34] | - | - | ? | ? | ? | - | ? | ? | - | - |
| Hu et al., 2015a [21] | - | - | ? | ? | ? | + | ? | ? | - | - |
| Hu et al., 2015b [22] | - | - | ? | ? | ? | ? | ? | ? | - | - |
| Jazideh et al., 2014 [35] | - | - | ? | ? | ? | - | ? | ? | - | - |
| Sifa et al., 2018 [16] | - | - | ? | ? | ? | - | ? | ? | - | - |
| Wu et al., 2018 [9] | - | - | ? | ? | ? | - | ? | ? | - | - |
| Wu et al., 2020 [36] | - | - | ? | ? | ? | - | ? | ? | - | - |
| Dai et al., 2009 [37] | - | - | ? | ? | ? | - | ? | ? | - | - |
| Hu et al., 2020a [23] | - | - | ? | ? | ? | ? | ? | ? | - | - |
| Hu et al., 2020b [38] | - | - | ? | ? | ? | ? | ? | ? | - | - |
| Hu et al., 2016 [39] | - | - | ? | ? | ? | - | ? | ? | - | - |
Abbreviations: 1: sequence generation; 2: baseline characteristic; 3: allocation concealment; 4: random housing; 5: blinding (performance bias); 6: random outcome assessment; 7: blinding (detection bias); 8: incomplete outcome data; 9: selective outcome reporting; 10: other sources of bias; “-“: low risk; “?”: unclear risk; “+”: high risk.