Test characteristics of FANA as screening test for SLE/MCTD/overlap syndrome (girls)
| FANA endpoint titre | Sensitivity | Specificity | Positive predictive value | Negative predictive value |
|---|---|---|---|---|
| ⩾1:1280 | 0.53 | 0.96 | 0.47 | 0.96 |
| 1:640 | 0.59 | 0.91 | 0.33 | 0.97 |
| 1:320 | 0.78 | 0.84 | 0.26 | 0.98 |
| 1:160 | 0.91 | 0.70 | 0.18 | 0.99 |
| 1:80 | 0.94 | 0.55 | 0.14 | 0.99 |
| 1:40 | 0.97 | 0.43 | 0.11 | 0.99 |
| 1:20 | 0.97 | 0.34 | 0.10 | 0.99 |