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. 2021 Sep 18;9(9):1042. doi: 10.3390/vaccines9091042

Figure 2.

Figure 2

Distribution of antibody titres according to age group and sex. Antibody titres in both men and women tended to decrease as participants’ ages increased from their 20s to 70s. Median (IQR) antibody titres of men in their 20s, 30s, 40s, 50s and 60s–70s were 942, 821, 710, 449 and 490 U/mL, respectively. Median (IQR) antibody titres of women in their 20s, 30s, 40s, 50s and 60s–70s were 1095, 991, 827, 685 and 519 U/mL, respectively. Men in each age group tended to have lower median antibody titres than women in the same age group. * p < 0.05, ** p < 0.01.