Clinical significance of anti-nucleocapsid-IgG sero-positivity in SARS-CoV-2 infection in hospitalized patients in North Dakota

Table 1 Summary statistics by IgG-N status

	IgG-N positive	IgG-N negative
Demographic information
Number	26 (19 male, 7 female)	32 (20 male, 12 female)
Mean age	61.1 (17.6)	60.0 (16.1)
Median age	63.5 (25)	63.5 (21)
Mean BMI	33.7 (7.4)	33.9 (7.7)
Median BMI	32.8 (12)	33.9 (10.1)
Mean DOS-d	7.5 (5.6)	6.5 (4.1)
Median DOS-d	5.5 (6.0)	7.0 (7.0)
Outcome
Mean LOS-d	9.3 (5.6)	10.7 (10.4)
Median LOS-d	7.5 (7)	6.5 (7)
Proportion of death	0.23	0.19
Proportion of ICU	0.19	0.16
Proportion of BiPAP	0.27	0.22
Proportion of VENT	0.15	0.16
Proportion of HFNC	0.38	0.25

Standard deviation and Interquartile Range are found in parentheses for mean and medians respectively. DOS: Duration of symptoms (days); LOS: length of stay (days); ICU: Intensive care unit; BiPAP: Bilevel positive airway pressure ventilation; VENT: Mechanical ventilation; HFNC: High flow nasal cannula.

Table 2 Matrix of Phi coefficient for binary outcomes

	Death	ICU	BiPAP	VENT	HFNC
Death	1	-	-	-	-
ICU	0.67	1	-	-	-
BiPAP	0.71	0.70	1	-	-
VENT	0.60	0.94	0.65	1	-
HFNC	0.58	0.48	0.67	0.43	1

ICU: Intensive care unit; BiPAP: Bilevel positive airway pressure ventilation; VENT: Mechanical ventilation; HFNC: High flow nasal cannula.