| Variables | Bronchial asthma (n = 130) | Allergic rhinitis (n = 130) | ||
| Present | Absent | Present | Absent | |
| Right ear | 104 (80%) | 26 (20%) | 84 (64.6%) | 46 (35.4%) |
| Left ear | 116 (89.2%) | 14 (10.8%) | 99 (76.2%) | 31 (23.8%) |
| Total | 84.6% | 15.4% | 70.4% | 29.6% |