SIC sensitivity and specificity when patients with OA due to persulphate salts (group A) were compared with asthmatic patients never exposed to persulphate salts (group B) (A/B)
| A/B | |
|---|---|
| Results expressed as % (95% CI). | |
| PPV, positive predictive value; NPV, negative predictive value. | |
| Sensitivity | 100 (67.6–100) |
| Specificity | 87.5 (52.9–97.8) |
| PPV | 88.9 (56.5–98.0) |
| NPV | 100 (64.6–100) |