Table 2.
Prevalence (%) and absolute difference between questionnaires (% with 95% CI) of symptoms, diseases and environmental factors by gender
| Men | |||
|---|---|---|---|
| OLIN | GA2LEN | Absolute difference (95% CI) | |
| Group I – identical between questionnaires | |||
| Ever asthma | 8.9 | 8.9 | 0.0 (−0.008–0.009) |
| Any wheeze | 16.3 | 14.3 | 2.0 (0.009–0.031) |
| Wheeze with breathlessness | 9.2 | 7.6 | 1.6 (0.008–0.025) |
| Wheeze apart from cold | 8.9 | 8.9 | 0.0 (−0.008–0.009) |
| Wheeze with breathlessness apart from cold | 5.6 | 5.1 | 0.5 (−0.003–0.011) |
| Waking with tight chest | 7.9 | 8.1 | −0.2 (−0.010–0.006) |
| Respiratory reaction to ASA | 1.3 | 1.2 | 0.1 (−0.003–0.004) |
| Group II – same question layout but not identical symptom asked for | |||
| Rhinitis | 26.6 | 24.1 | 2.5 (0.012–0.039) |
| Physician-diagnosed COPD | 2.5 | 1.4 | 1.1 (0.008–0.016) |
| Nasal blockage | 15.5 | 12.8 | 2.7 (0.016–0.037) |
| Rhinorrhea | 14.6 | 6.2 | 8.4 (0.074–0.094) |
| Exposed at work | 32.2 | 52.2 | −20 (−0.214– −0.185) |
| Group III – similar wording but different set-up | |||
| Productive cough | 8.3 | 10.1 | −1.8 (−0.027– −0.009) |
| Ever smoker | 39.4 | 41.7 | −2.3 (−0.025–0.005) |
| Asthma medication | 6.9 | 4.7 | 2.2 (0.015–0.029) |
| Attacks of shortness of breath | 7.6 | 2.4 | 5.2 (0.045–0.058) |
| Women | ||||
|---|---|---|---|---|
| Group I – identical between questionnaires | ||||
| Ever asthma | 11.0 | 11.1 | −0.1 (−1.017–0.770) | |
| Any wheeze | 18.9 | 16.5 | 2.4 (0.013–0.035) | |
| Wheeze with breathlessness | 11.8 | 9.9 | 1.9 (0.010–0.028) | |
| Wheeze apart from cold | 10.0 | 9.7 | 0.3 (−0.004–0.013) | |
| Wheeze with breathlessness apart from cold | 6.8 | 6.2 | 0.6 (−0.001–0.013) | |
| Waking with tight chest | 10.2 | 10.4 | −0.2 (−0.011–0.006) | |
| Respiratory reaction to ASA | 2.2 | 2.1 | 0.1 (−0.003–0.005) | |
| Group II – same question layout but not identical symptom asked for | ||||
| Rhinitis | 28.5 | 25.3 | 3.2 (0.020–0.045) | |
| Physician-diagnosed COPD | 3.7 | 1.5 | 2.2 (0.018–0.026) | |
| Nasal blockage | 14.7 | 11.8 | 2.9 (0.019–0.038) | |
| Rhinorrhea | 15.2 | 6.1 | 9.1 (0.082–0.100) | |
| Exposed at work | 13.8 | 23.4 | −9.6 (−0.106– −0.085) | |
| Group III – similar wording but different set-up | ||||
| Productive cough | 7.9 | 9.1 | −1.2 (−0.019– −0.003) | |
| Ever smoker | 40.7 | 42.3 | −1.6 (−0.017–0.010) | |
| Asthma medication | 10.2 | 6.3 | 3.9 (0.031–0.046) | |
| Attacks of shortness of breath | 11.3 | 3.5 | 7.8 (0.071–0.086) | |
ASA, Aspirin Sensitive Asthma; CI, confidence interval; COPD, chronic obstructive pulmonary disease.