Table 3.

Complications by groups.

Respiratory
Variable	Category	OR (95% CI)	p value
Age		0.93 (0.87, 0.99)	0.023
Sex	Male	Ref	0.775
	Female	0.82 (0.21, 3.16)
Group	O	Ref	0.958
	A	1.22 (0.31, 4.84)
	AB-B	1.01 (0.10, 9.82)

Thrombotic
Variable	Category	OR (95% CI)	p value
Age		0.99 (0.96, 1.02)	0.627
Sex	Male	Ref	0.970
	Female	0.98 (0.36, 2.65)
Group	A	Ref	0.017
	AB-B	6.16 (1.75, 21.8)
	O	2.09 (0.67, 6.54)

Other infections
Variable	Category	OR (95% CI)	p value
Age		0.99 (0.97, 1.01)	0.254
Sex	Male	Ref	0.114
	Female	1.74 (0.88, 3.48)
Group	A	Ref	0.035
	AB-B	3.05 (1.11, 8.39)
	O	2.36 (1.11, 5.01)

Ref: reference; OR: odds ratio; CI: confidence interval.