Table. 2 Proportion of ECGs correctly diagnosed when participants were provided with a case vignette or not
| Â | Junior students | Senior students | Residents | ||||||
|---|---|---|---|---|---|---|---|---|---|
n = 67 | n = 55 | n = 54 | |||||||
Without scenario | With scenario | p-value | Without scenario | With scenario | p-value | Without scenario | With scenario | p-value | |
Arrhythmias | |||||||||
 Sinus arrhythmia | 59 (88.1) | 59 (88.1) | 1 | 41 (74.5) | 47 (85.5) | 0.083 | 51 (94.4) | 49 (90.7) | 0.317 |
 Sinus arrest | 55 (82.1) | 56 (83.6) | 0.706 | 39 (70.9) | 44 (80.0) | 0.096 | 43 (79.6) | 43 (79.6) | 1 |
 First degree AV block | 54 (80.6) | 49 (73.1) | 0.059 | 38 (69.1) | 40 (72.7) | 0.527 | 47 (87.0) | 51 (94.4) | 0.103 |
 Mobitz type I second degree AV block | 49 (73.1) | 49 (73.1) | 1 | 30 (54.5) | 29 (52.7) | 0.781 | 32 (59.3) | 29 (53.7) | 0.317 |
 Mobitz type II second degree AV block | 54 (80.6) | 52 (77.6) | 0.480 | 33 (60.0) | 37 (67.3) | 0.317 | 45 (83.3) | 40 (74.1) | 0.059 |
 Third degree AV block | 57 (85.1) | 54 (80.6) | 0.257 | 38 (69.1) | 39 (70.9) | 0.563 | 51 (94.4) | 50 (92.6) | 0.654 |
 Atrial fibrillation with normal rate | 56 (83.6) | 58 (86.6) | 0.414 | 36 (65.5) | 40 (72.7) | 0.103 | 47 (87.0) | 51 (94.4) | 0.103 |
 Atrial fibrillation with uncontrolled rate | 49 (73.1) | 45 (67.2) | 0.248 | 33 (60.0) | 28 (50.9) | 0.197 | 30 (55.6) | 41 (75.9) | 0.002 |
 Atrial flutter | 43 (64.2) | 41 (61.2) | 0.593 | 30 (54.5) | 35 (63.6) | 0.197 | 36 (66.7) | 36 (66.7) | 1 |
 AV nodal re-entrant tachycardia | 40 (59.7) | 50 (74.6) | 0.012 | 27 (49.1) | 32 (58.2) | 0.096 | 44 (81.5) | 49 (90.7) | 0.059 |
 Ventricular tachycardia | 39 (58.2) | 42 (62.7) | 0.257 | 34 (61.8) | 33 (60.0) | 0.739 | 42 (77.8) | 47 (87.0) | 0.132 |
 Ventricular fibrillation | 30 (44.8) | 36 (53.7) | 0.109 | 27 (49.1) | 24 (43.6) | 0.257 | 33 (61.1) | 36 (66.7) | 0.257 |
Waveform abnormalities | |||||||||
 Left anterior fascicular block | 50 (74.6) | 49 (73.1) | 0.808 | 29 (52.7) | 24 (43.6) | 0.166 | 39 (72.2) | 42 (77.8) | 0.257 |
 Left bundle branch block | 58 (86.6) | 56 (83.6) | 0.317 | 38 (69.1) | 38 (69.1) | 1 | 50 (92.6) | 49 (90.7) | 0.564 |
 Right bundle branch block | 55 (82.1) | 55 (82.1) | 1 | 42 (76.4) | 42 (76.4) | 1 | 48 (88.9) | 49 (90.7) | 0.655 |
 Wolff-Parkinson-White pattern | 49 (73.1) | 59 (88.1) | 0.012 | 37 (67.3) | 47 (85.5) | 0.004 | 47 (87.0) | 52 (96.3) | 0.059 |
 Left atrial enlargement | 52 (77.6) | 51 (76.1) | 0.763 | 38 (69.1) | 41 (74.5) | 0.439 | 46 (85.2) | 45 (83.3) | 0.739 |
 Right atrial enlargement | 54 (80.6) | 57 (85.1) | 0.179 | 43 (78.2) | 45 (81.8) | 0.527 | 47 (87.0) | 49 (90.7) | 0.414 |
 Left ventricular hypertrophy | 46 (68.7) | 58 (86.6) | 0.003 | 44 (80.0) | 49 (89.1) | 0.059 | 49 (90.7) | 51 (94.4) | 0.414 |
 Right ventricular hypertrophy | 47 (70.1) | 63 (94.0) | < 0.001 | 31 (56.4) | 48 (87.3) | < 0.001 | 44 (81.5) | 51 (94.4) | 0.020 |
 Anterior STEMI | 62 (92.5) | 63 (94.0) | 0.564 | 46 (83.6) | 48 (87.3) | 0.480 | 52 (96.3) | 51 (94.4) | 0.564 |
 Inferior STEMI | 61 (91.0) | 58 (86.6) | 0.180 | 49 (89.1) | 48 (87.3) | 0.564 | 44 (81.5) | 48 (88.9) | 0.046 |
 Pericarditis | 30 (44.8) | 57 (85.1) | < 0.001 | 20 (36.4) | 40 (72.7) | < 0.001 | 37 (68.5) | 51 (94.4) | 0.001 |
 Hyperkalaemia | 39 (58.2) | 55 (82.1) | < 0.001 | 18 (32.7) | 34 (61.8) | < 0.001 | 29 (53.7) | 45 (83.3) | < 0.001 |
 Prolonged QT interval | 54 (80.6) | 57 (85.1) | 0.405 | 38 (69.1) | 43 (78.2) | 0.132 | 43 (79.6) | 48 (88.9) | 0.096 |