From: Can spirometric norms be set using pre- or post- bronchodilator test results in older people?
<LLN using pre-bronchodilator | <LLN using pre-bronchodilator + K | |||||
---|---|---|---|---|---|---|
Sensitivity | Specificity | Youden’s index | Sensitivity | Specificity | Youden’s index | |
FEV1 | 78.4% | 100% | 0.78 | 99% | 99.8% | 0.99 |
FEV6 | 96.1% | 100% | 0.96 | 98% | 99.8% | 0.98 |
FVC | 99.8% | 99.1% | 0.99 | 97.4% | 99.9% | 0.97 |
FEV1/FVC | 65.0% | 100% | 0.65 | 98.7% | 99.5% | 0.98 |