Table 3 Quality assessment of individual study
Study | Random sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding of outcome assessment (detection bias) | Blinding of participants and personnel (performance bias) | Incomplete outcome data (attrition bias) | Selective reporting (reporting bias) | Other bias | Statistical analysis | MINORS score |
|---|---|---|---|---|---|---|---|---|---|
Min Lulin et al. (2017) [22] | + | ? | + | - | + | ? | + | T-test or ANCOVA | NA |
Li Yebei et al. (2021) [24] | - | - | ? | - | ? | ? | + | T-test or Pearson chi-square test | 19 points |
Ni Zhaohui et al. (2021) [23] | + | ? | + | - | + | ? | + | T-test or ANCOVA | NA |