| Variable | Severe Asthma N = 93 | Nonsevere Asthma N = 113 | Total N = 206 | Odds ratio | 95% confidence interval | P | |
| Lower | Upper | ||||||
| Rhinitis |
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| Yes | 51 (51.5) | 48 (48.5) | 99 | 1.64 | 0.94 | 2.8 | 0.07 |
| No | 42 (39.3) | 65 (60.8) | 107 |
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| Adenotonsillar hypertrophy |
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| Yes | 33 (42.3) | 45 (57.7) | 78 | 0.83 | 0.47 | 1.4 | 0.52 |
| No | 60 (46.9) | 68 (53.1) | 128 |
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| Atopic dermatitis |
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| Yes | 24 (50) | 24 (50) | 48 | 1.2 | 0.67 | 2.4 | 0.44 |
| No | 69 (43.7) | 89 (56.3) | 158 |
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| Gastroesophageal reflux disease |
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| Yes | 8 (66.7) | 4 (33.3) | 12 | 2.54 | 0.74 | 8.8 | 0.12 |
| No | 85 (43.8) | 109 (56.2) | 194 |
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| Food allergy |
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| Yes | 10 (50) | 10 (50) | 20 | 1.2 | 0.49 | 3.12 | 0.64 |
| No | 83 (44.6) | 103 (55.4) | 186 |
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| Allergic conjunctivitis |
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| Yes | 21 (61.8) | 13 (38.2) | 34 | 2.2 | 1.05 | 4.7 | 0.03* |
| No | 72 (41.9) | 100 (58.1) | 172 |
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| Presence of any comorbidity |
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| Yes | 70 (45.4) | 84 (54.6) | 154 | 1.05 | 0.55 | 1.99 | 0.87 |
| No | 23 (44.2) | 29 (55.8) | 52 |
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| Presence of only 1 comorbidity |
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| Yes | 28 (41.8) | 39 (58.2) | 67 | 0.82 | 0.45 | 1.45 | 0.50 |
| No | 65 (46.8) | 74 (53.2) | 139 |
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| Presence of 2 comorbidities |
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| Yes | 18 (35.3) | 33 (64.7) | 51 | 0.58 | 0.30 | 1.1 | 0.1 |
| No | 75 (48.4) | 80 (51.6) |
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| Presence of 3 comorbidities |
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| Yes | 14 (60.9) | 9 (39.1) | 23 | 2.04 | 0.84 | 4.9 | 0.10 |
| No | 79 (43.2) | 104 (56.8) | 183 |
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| Presence of 4 comorbidities |
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| Yes | 10 (79.9) | 3 (23.1) | 13 | 4.4 | 1.17 | 16.5 | 0.01* |
| No | 83 (43) | 110 (57) | 193 |
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