Table 2.
Accuracy scores and confidence ratings for all evaluators
| First phase—two images: mean ± SD | Second phase—three images: mean ± SD | Difference | p | |
|---|---|---|---|---|
| Correct score | All evaluators (n = 65) | |||
| All cases | 19.98 ± 4.51 | 26.34 ± 4.02 | +6.36 (18.7 %) | <0.001 |
| Easy | 9.49 ± 1.09 | 10.02 ± 0.91 | +0.53 (4.9 %) | <0.001 |
| Intermediate | 7.66 ± 2.22 | 9.48 ± 1.84 | +1.82 (14.0 %) | <0.001 |
| Difficult | 2.83 ± 2.04 | 6.85 ± 2.14 | +4.02 (40.2 %) | <0.001 |
| Confidence rating | ||||
| All cases | 115.6 ± 17.39 | 134.29 ± 17.83 | +18.69 | <0.001 |
| Easy | 42.43 ± 6.16 | 47.78 ± 5.50 | +5.35 | <0.001 |
| Intermediate | 41.66 ± 7.14 | 49.31 ± 7.03 | +7.65 | <0.001 |
| Difficult | 31.51 ± 5.84 | 37.20 ± 6.45 | +5.69 | <0.001 |