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. 2023 Jul 12;18(7):e0288557. doi: 10.1371/journal.pone.0288557

Fig 5. Differences in IgA antibody levels between different groups.

Fig 5

(A) The first graph compares the IgA antibody levels between the sexes (F for female and M for male), showing the distribution of antibody levels in each group. (B) IgA antibody levels are shown as a function of age, with the 190 participants divided into two groups: under 50 years and over 50 years. Each age interval is represented by a separate box plot. (C) Displays IgA antibody levels according to the presence or absence of comorbidities. The box plots show the distribution of antibody levels in each group. In all three graphs, P-values are calculated using the Mann-Whitney test.