From: Evaluation of the effect of clinical characteristics and intensive care treatment methods on the mortality of covid-19 patients aged 80 years and older
Test Result Variable(s)
Cut-off Value
Sensitivity
Specificity
PPV
NPV
Accuracy Rates
CRP
≥96.5
72.1
58.8
87.8
33.9
69.5
PCT
≥0.31
72.9
52.9
86.4
32.1
70.0
Ferritin
≥338
64.5
60.6
87.3
29
63.4
WBC
≥10,545
54.0
50.0
81.5
21.0
53.2