Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
True positives, false positives, sensitivity, specificity and predictive values obtained in the sample analyzed using the F/E index and FC.
| F/E index ≥ 0.037 n (%) |
FC ≤ 100.5 μg/g N (%) |
|
|---|---|---|
| Anti-TNF responders (n = 13) | 12 (92.3) | 12 (92.3) |
| Anti-TNF non-responders (n = 14) | 6 (42.9) | 3 (21.4) |
| P value test Chi square | 0.006 | < 0.001 |
| Sensitivity | 92.3% | 92.3% |
| Specificity | 57.1% | 78.6% |
| Positive predictive value | 66.7% | 80.0% |
| Negative predictive value | 88.9% | 91.7% |
