. Author manuscript; available in PMC: 2023 Apr 1.

Published in final edited form as: J Immunol. 2022 Mar 23;208(7):1711–1718. doi: 10.4049/jimmunol.2101156

Table I.

Outpatients with lower antibody concentration against SARS-CoV-2¹

Antibody	Female (N=105)	Male (N=67)	Total (N=173)
N
<10⁴	7 (6.7%)	4 (6.0%)	11 (6.4%)
<5×10⁴	25 (23.8%)	13 (19.4%)	39 (22.5%)

RBD
<10⁴	9 (8.6%)	2 (3.0%)	11 (6.4%)
<5×10⁴	26 (24.8%)	12 (17.9%)	39 (22.5%)

S1
<10⁴	9 (8.6%)	3 (4.5%)	12 (6.9%)
<5×10⁴	26 (24.8%)	12 (17.9%)	39 (22.5%)

S2
<10⁴	2 (1.9%)	1 (1.5%)	3 (1.7%)
<5×10⁴	5 (4.8%)	6 (9.0%)	12 (6.9%)

The number of patients with antibody concentrations < 10⁴ U/ml or < 5×10⁴ U/ml.