Table 4.

Association analysis between the lymphocyte count and ABO blood type in COVID-19 cases.

Blood grouping	n	Mean ± SD (10∧9/L)	95% CI	F	P
A	45	0.76 ± 0.48	0.61–0.90
B	28	0.85 ± 0.52	0.65–1.05
AB	9	0.83 ± 0.27	0.62–1.03	0.30	0.83
O	23	0.85 ± 0.45	0.60–1.04

SD, standard deviation; CI, confidence intervals.