| Past history | Frequency | Percent (n = 61) |
| Similar condition | 5 | 8.2% |
| AOM | 29 | 47.6% |
| Bronchial asthma | 4 | 6.6% |
| Rhinosinusitis | 3 | 4.9% |
| None | 20 | 32.7% |