Sensitivity, specificity, predictive values and diagnostic odds ratios(ORs) for general practitioners’ judgement after intervention
| COPD | Asthma | Rare respiratory pathology | Absence of respiratory disease | |
| Expert support group | ||||
| Sensitivity | 80.6 | 83.3 | 2.8 | 39.4 |
| Specificity | 77.5 | 90.4 | 99.4 | 97.5 |
| PPV | 70.7 | 78.9 | 33.3 | 61.9 |
| NPV | 85.5 | 92.6 | 90.1 | 94.0 |
| Diagnostic OR | 14.2 | 46.9 | 4.6 | 25.7 |
| 95% CI | 8.46–23.98 | 24.35–90.23 | 0.59–35.90 | 9.74–67.71 |
| Control group | ||||
| Sensitivity | 76.2 | 76.2 | 0.0 | 35.9 |
| Specificity | 79.1 | 90.7 | 99.7 | 97.6 |
| PPV | 71.1 | 78.0 | 0.0 | 60.9 |
| NPV | 83.1 | 89.8 | 89.9 | 93.7 |
| Diagnostic OR | 12.1 | 31.3 | NA | 23.0 |
| 95% CI | 7.60–19.34 | 17.73–55.22 | 0.0–34.79 | 9.22–57.17 |
| p-value | 0.65 | 0.36 | NA | 0.87 |
Data are presented as %, unless otherwise indicated. COPD: chronic obstructive pulmonary disease; PPV: positive predictive value; NPV: negative predictive value; CI: confidence interval; NA: not available.