Variable SF–stream–level (pg./dl)
Cut off level 825 pg./ml
Sensitivity (%) 50%
Specificity (%) 70%
Positive predictive value (%) 64%
Negative predictive value (%) 64%
Kappa Index 0.28
Area under the ROC Curve 0.603 (0.448–0.757)
Table 1: Statistical variables for SF /STREM–1 level.