Table 4 Inter-rater reliability for categorisation of appropriate and inappropriate referrals for MRI with eight subcategories (n = 50)
Raters | Observed agreement (%) | Expected agreement (%) | Kappa (95% confidence interval) |
|---|---|---|---|
1:2 | 88.0 | 35.1 | 0.82 (0.65–0.94) |
1:3 | 84.0 | 33.9 | 0.76 (0.59–0.90) |
1:4 | 88.0 | 35.4 | 0.81 (0.65–0.93) |
1:5 | 90.0 | 36.9 | 0.84 (0.70–0.97) |
2:3 | 84.0 | 33.1 | 0.76 (0.61–0.90) |
2:4 | 88.0 | 35.2 | 0.82 (0.68–0.94) |
2:5 | 92.0 | 36.5 | 0.87 (0.73–0.97) |
3:4 | 90.0 | 33.2 | 0.85 (0.71–0.97) |
3:5 | 86.0 | 34.6 | 0.79 (0.63–0.92) |
4:5 | 92.0 | 37.0 | 0.87 (0.70–0.97) |
1:2:3:4:5 | 88.2 | 35.1 | 0.82 (0.72–0.92) |