Table 7

Correlation matrix (parametric Pearson’s r and non-parametric Spearman’s r) among the biomarkers evaluated

Variable	hsCRP	D-dimer	Interleukin-6	Lactic dehydrogenase	Ferritin	Neutrophil–lymphocyte ratio
Pearson correlation (r)
hsCRP	—	0.180**	0.142**	0.287**	0.269**	0.305**
D-dimer	0.180**	—	0.262**	0.346**	0.224**	0.225**
Interleukin-6	0.142**	0.262**	—	0.317**	0.166**	0.202**
Lactic dehydrogenase	0.287**	0.346**	0.377**	—	0.416**	0.308**
Ferritin	0.269**	0.224**	0.166**	0.416**	—	0.256**
Neutrophil–lymphocyte	0.305**	0.225**	0.202**	0.308**	0.256**	—
Spearman correlation (r)
hsCRP	—	0.231**	0.424**	0.543**	0.420**	0.477**
D-dimer	0.231**	—	0.288**	0.357**	0.227**	0.282**
Interleukin-6	0.424**	0.288**	—	0.360**	0.280**	0.266**
Lactic dehydrogenase	0.543**	0.357**	0.360**	—	0.521**	0.477**
Ferritin	0.420**	0.227**	0.280**	0.521**	—	0.383**
Neutrophil–lymphocyte	0.477**	0.282**	0.266**	0.477**	0.383**	—