Table 3.
Accuracy scores and confidence ratings for evaluators by position
| First phase—two images: mean ± SD | Second phase—three images: mean ± SD | Difference | p | |
|---|---|---|---|---|
| Correct score | Residents (n = 26) | |||
| All cases | 19.12 ± 3.99 | 26.62 ± 3.89 | +7.50 (22.1 %) | <0.001 |
| Easy | 9.38 ± 1.06 | 9.96 ± 0.92 | +0.58 (5.2 %) | 0.008 |
| Intermediate | 7.50 ± 1.96 | 9.27 ± 1.61 | +1.77 (13.6 %) | <0.001 |
| Difficult | 2.23 ± 1.75 | 7.38 ± 2.04 | +5.15 (51.5 %) | <0.001 |
| Confidence rating | ||||
| All cases | 113.69 ± 18.03 | 132.27 ± 20.22 | +18.68 | <0.001 |
| Easy | 41.12 ± 6.70 | 46.65 ± 6.65 | +5.53 | <0.001 |
| Intermediate | 40.73 ± 7.19 | 48.69 ± 7.08 | +7.96 | <0.001 |
| Difficult | 31.85 ± 5.30 | 36.92 ± 7.41 | +5.07 | 0.001 |
| Correct score | Attendings (n = 38) | |||
| All cases | 20.79 ± 4.64 | 26.26 ± 4.15 | +5.52 (16.1 %) | <0.001 |
| Easy | 9.63 ± 1.05 | 10.05 ± 0.93 | +0.42 (3.9 %) | 0.016 |
| Intermediate | 7.87 ± 2.35 | 9.68 ± 1.96 | +1.81 (14 %) | <0.001 |
| Difficult | 3.29 ± 2.13 | 6.53 ± 2.18 | +3.24 (32.4 %) | <0.001 |
| Confidence rating | ||||
| All cases | 116.84 ± 17.30 | 136.24 ± 15.95 | +19.4 | <0.001 |
| Easy | 43.45 ± 5.71 | 48.79 ± 4.29 | +5.34 | <0.001 |
| Intermediate | 42.21 ± 7.22 | 49.92 ± 7.05 | +7.71 | <0.001 |
| Difficult | 31.18 ± 6.28 | 37.53 ± 5.84 | +6.35 | <0.001 |
The one fellow was excluded from the above analysis