Table 4.

Logistic regression analysis adjusted by age and sex for assessing the effect of each blood group on COVID-19 outcome.

	Mild. vs. not mild	Severe. vs. not severe
A—Non A	26 (44.1%)	10 (16.9%)
	OR = 1.029 CI: 0.414-2.559 P = 0.951	OR = 0.752 CI: 0.238-2.378 P = 0.628
B—Non B	17 (68%)	2 (8%)
	OR = 2.847 CI: 0.905-9.959 P = 0.73	OR = 0.879 CI: 0.170-4.538 P = 0.877
O—Non O	22 (42.3%)	7 (13.5 %)
	OR = 0.340 CI: 0.135-0.855 P = 0.22	OR = 1.536 CI: 0.487-4.849 P = 0.464
AB—Non AB	7 (70%)	1 (10%)
	OR = 4.613 CI: 0.717-29.684 P = 0.108	OR = 0.784 CI: 0.083-7.393 P = 0.832

OR, Odds Ratio; CI, Confidence interval; P, P value.