Table 7. Category-Specific Performance Metrics.
| Category | Total Questions | Claude Correct | Claude % | ChatGPT-4 Correct | ChatGPT-4 % | Difficulty Level * | Common Error Type |
| Cardiac Electrophysiology | 35 | 12 | 34.3% | 9 | 25.7% | High | Rhythm interpretation, conduction disorders |
| Pacemaker Programming | 25 | 9 | 36.0% | 6 | 24.0% | High | Parameter optimization, troubleshooting |
| Perioperative Complications | 20 | 6 | 30.0% | 4 | 20.0% | Moderate | Emergency management, drug dosing |
| Antiarrhythmic Pharmacology | 12 | 3 | 25.0% | 2 | 16.7% | High | Drug interactions, dosing calculations |
| Mechanical Support Devices | 8 | 2 | 25.0% | 2 | 25.0% | Very High | Device programming, troubleshooting |
| Overall | 100 | 32 | 32.0% | 23 | 23.0% | High | Concept integration, visual interpretation |