Number of cases according to diagnostic categories
| Diagnostic Category | Number of cases (%) |
| Acute respiratory illness | 53 (33.5) |
| Cardiology/cardiac surgery | 53 (33.5) |
| Chronic respiratory illness | 22 (13.9) |
| Airway (eg. laryngomalacia) | 5 (3.2) |
| Sepsis | 3 (2) |
| Others | 22 (13.9) |
| Total | 158 (100) |