Table 4.

Laboratory variables (at admission) associated with mortality by Cox regression

Variable	Overall (n = 610)		1st wave (n = 397)		2nd wave (n = 213)
	HR (CI95)	p	HR (CI95)	p	HR (CI95)	p
Univariate
CRP, mg/dL	1.064 (1.041–1.088)	3.49 × 10 − 8	1.046 (1.016–1.077)	0.003	1.059 (1.022–1.09)	0.002
Lymphocytes, cells/mm3	0.9999 (0.9996–1.0002)	0.585	0.9997 (1.00026–1.00028)	0.345	1.0001 (0.9997–1.0006)	0.475
Ferritin	0.9999 (0.9997–1.00001)	0.426	0.9998 (0.9996–1.00003)	0.099	0.9999 (0.9996–1.0003)	0.744
D-Dimer	1.00003 (1.00002–1.00005)	1.11 × 10 − 5	1 (1.00002–1.00009)	0.003	1.00004 (1.00002–1.00005)	3.73 × 10 − 5
Multivariate
CRP, mg/dL	1.057(1.030–1.084)	2.2 × 10 − 5	1.046 (1.0125–1.081)	0.007	1.043 (1.0006–1.089)	0.047
D-Dimer	1.00002 (1.00001–1.00004)	9.84 × 10 − 4	1.00006 (1.00002–1.0001)	0002	1.00003 (1.00001–1.00005)	0.006

Upper panel: univariate analysis; lower panel: multivariate analysis

Significant p values (<0.05) are highlighted in bold