FEV1/FVC <0.7 (GOLD) | FEV1/FVC <1.645 SD below predicted (ATS/ERS) | ||||
---|---|---|---|---|---|
Value | 95% CI | Value | 95% CI | ||
Physician-diagnosed COPD | Sensitivity | 0.057 | 0.027–0.088 | 0.098 | 0.04–0.156 |
Specificity | 0.997 | 0.994–0.999 | 0.995 | 0.993–0.998 | |
LR+ | 16.859 | 6.894–41.228 | 21.532 | 9.226–50.25 | |
PPV | 0.636 | 0.427–0.846 | 0.485 | 0.267–0.702 | |
NPV | 0.911 | 0.899–0.922 | 0.962 | 0.954–0.97 | |
Chronic bronchitis symptoms | Sensitivity | 0.046 | 0.019–0.074 | 0.074 | 0.022–0.125 |
Specificity | 0.979 | 0.973–0.985 | 0.979 | 0.973–0.985 | |
LR+ | 2.244 | 1.161–4.337 | 3.520 | 1.664–7.443 | |
PPV | 0.189 | 0.086–0.292 | 0.133 | 0.044–0.223 | |
NPV | 0.908 | 0.896–0.920 | 0.960 | 0.952–0.968 |