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. 2023 Aug 25;33:100677. doi: 10.1016/j.bbih.2023.100677

Table 2.

Results of the t-tests and descriptive.


anti-RBD IgG T0
anti-RBD IgG T1
anti-RBD IgG T2
M (sd) M (sd) M (sd)
Previous SARS-CoV-2 infection .92 (1.4) 14.91 (10.26) 7.17 (4.33)
No previous SARS-CoV-2 infection .01 (.24) 11.70 (9.87) 3.40 (3.21)
t-test t(20.30) = -2.53, p = .02 t (92) = −1.17, p = .24 t(72) = -3.60, p = .001