Table 3.
Proportion of correct CXR interpretation by grade of participants.
| Slide number, interpretation | Clinical history | Grade of participants (% correct) | |||||
|---|---|---|---|---|---|---|---|
| Residents (N = 10) | Medical officers (N = 18) | House officer (N = 33) | Medical students (N = 38) | Total (N = 99) | Chi-square p value | ||
| 1, pneumothorax | No | 40.0 | 11.1 | 42.4 | 18.4 | 27.3 | 0.037∗ |
| Yes | 60.0 | 5.6 | 57.6 | 10.5 | 30.3 | <0.001∗∗ | |
| 2, normal image | No | 10.0 | 16.7 | 9.1 | 15.8 | 13.1 | 0.803 |
| Yes | 70.0 | 66.7 | 78.8 | 57.9 | 67.7 | 0.313 | |
| 3, pneumoperitoneum | No | 60.0 | 27.8 | 21.2 | 10.5 | 22.2 | 0.009∗ |
| Yes | 80.0 | 88.9 | 81.8 | 57.9 | 73.7 | 0.039∗ | |
| 4, pneumomediastinum | No | 10.0 | 5.6 | 6.1 | 10.5 | 8.1 | 0.875 |
| Yes | 50.0 | 55.6 | 24.2 | 26.3 | 33.3 | 0.062 | |
| 5, lung collapse | No | 30.0 | 33.3 | 54.6 | 26.3 | 37.4 | 0.090 |
| Yes | 30.0 | 44.4 | 42.4 | 31.6 | 37.4 | 0.677 | |
| 6, pulmonary edema | No | 40.0 | 38.9 | 51.5 | 47.4 | 46.5 | 0.817 |
| Yes | 90.0 | 88.9 | 81.8 | 89.3 | 86.9 | 0.848 | |
| 7, pneumonia | No | 70.0 | 72.2 | 60.6 | 63.2 | 64.7 | 0.837 |
| Yes | 100.0 | 94.4 | 84.9 | 97.4 | 92.9 | 0.155 | |
| 8, tuberculosis | No | 70.0 | 72.2 | 75.8 | 50.0 | 64.7 | 0.115 |
| Yes | 90.0 | 100.0 | 84.9 | 73.7 | 83.8 | 0.083 | |
| 9, Pancoast tumour | No | 50.0 | 22.2 | 48.5 | 42.1 | 41.4 | 0.293 |
| Yes | 60.0 | 61.1 | 75.8 | 47.4 | 60.6 | 0.113 | |
| 10, clavicular fracture | No | 30.0 | 55.6 | 15.2 | 39.5 | 33.3 | 0.022∗ |
| Yes | 50.0 | 66.7 | 72.7 | 65.8 | 66.7 | 0.613 | |
∗∗significant at p-value < 0.001∗significant at p-value p-value < 0.05.