Table 1 Interrater agreement between two assessors for study selection and risk of bias
Items | % agreement | Kappa | 95%CI | P |
|---|---|---|---|---|
Study selection | 95 | 0.847 | 0.66–1.0 | 0.0001 |
Overall agreement for risk of bias | 81 | 0.676 | 0.49–0.95 | 0.01 |
Random sequence generation (selection bias) | 83 | 0.733 | 0.38–1.0 | 0.0001 |
Allocation concealment (selection bias) | 83 | 0.724 | 0.33–1.0 | 0.01 |
Blinding of participants and personnel (performance bias) | 75 | 0.581 | 0.13–0.87 | 0.008 |
Blinding of outcome assessment (detection bias) | 83 | 0.733 | 0.33–1.0 | 0.0001 |
Incomplete outcome data (attrition bias) | 92 | 0.860 | 0.54–1.0 | 0.0001 |
Selective reporting (reporting bias) | 67 | 0.429 | 0.59–0.83 | 0.05 |