Table 2.

Distribution of ABO and Rh blood groups between COVID+ ICU+ and COVID+ ICU−.

Blood group	COVID+ ICU+	COVID+ICU−	p-value	OR (95% CI)
	n = 779	n = 1,807
A	228 (29.27)	546 (30.22)	0.629	0.96 (0.80–1.15)
B	329 (42.23)	752 (41.62)	0.770	1.03 (0.87–1.22)
O	174 (22.34)	374 (20.70)	0.349	1.10 (0.90–1.35)
AB	48 (6.16)	135 (7.46)	0.234	0.81 (0.58–1.43)
Rh			0.546	0.83 (0.46–1.51)
+	762 (97.82)	1,774 (98.17)
−	17 (2.18)	33 (1.83)