Respiratory Tract Symptoms of 298 Active Patients Still in Practice Without an Asthma Diagnosis at Start of Study
| Symptoms | BHR No. (%) | Non-BHR No. (%) | RR (95% CI) | PValue | Symptomatic* No. (%) | Asymptomatic No. (%) | RR (95% CI) | PValue |
|---|---|---|---|---|---|---|---|---|
| BHR = bronchial hyperresponsiveness; RR = relative risk; CI = confidence interval. | ||||||||
| * ≥1 positive answer to the respiratory tract symptom questionnaire in 1989. | ||||||||
| † Includes otitis media, influenza, acute sinusitis, and laryngitis diagnoses. | ||||||||
| ‡ Includes pneumonia and acute bronchitis. | ||||||||
| >4 upper respiratory tract infections† | 16 (13) | 21 (12) | 1.1 (0.6–2.3) | .70 | 10 (16) | 27 (11) | 1.5 (0.7–3.2) | .34 |
| Lower respriatory tract infections‡ | 18 (15) | 16 (9) | 1.8 (0.9–3.6) | .10 | 6 (10) | 28 (12) | 0.8 (0.3–2.0) | .46 |
| Allergic rhinitis | 18 (15) | 21 (12) | 1.3 (0.7–2.6) | .45 | 16 (25) | 23 (10) | 3.1 (1.5–6.4) | .001 |
| Asthma | 8 (7) | 8 (5) | 1.5 (0.5–4.1) | .40 | 8 (13) | 8 (3) | 4.1 (1.5–11.5) | .01 |
| Total | 121 (100) | 177 (100) | 63 (100) | 235 (100) | ||||