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Table 2 Illustrate the median age, the timing of CTPA, laboratory levels, and CT severity score in correlation with the incidence of pulmonary embolism (PE)

From: CT pulmonary angiography in COVID-19 pneumonia: relationship between pulmonary embolism and disease severity

Wilcoxon rank-sum test CT angiography group Median 25 Perc 75 Perc Z P value Sig.
Age Negative 47.5 27.5 61.75 − 1.203 0.229 NS
Positive 55.5 39.5 67.25
Time for CT angiography Negative 9 5 15.75 − 1.09 0.276 NS
Positive 12 10 16.5
D. dimer level Negative 1.26 0.575 3.2625 − 1.119 0.263 NS
Positive 1.8 1.185 4.425
Ferritin level Negative 530 198.75 815.25 − 0.345 0.73 NS
Positive 425 270.25 701.25
CRP level Negative 79 12.775 167.5 − 1.464 0.143 NS
Positive 118.5 78.5 156.25
WBC count Negative 11.2 7.6 16.425 − 0.596 0.551 NS
Positive 10.5 8.35 13.05
Neutrophil count Negative 8.845 5.75 13.8 − 0.282 0.778 NS
Positive 8.4 6.425 10.15
Lymphocyte count Negative 1.44 0.76 2.205 − 0.638 0.523 NS
Positive 1.1 0.9125 1.575
CT severity score for COVID-19 Negative 7 1.25 14.75 − 0.326 0.745 NS
Positive 6 4 10.75