Fig. 4

Comparison of T lymphocyte subset counts and percentages among the four subgroups. DM, diabetes mellitus; non-DM, without diabetes mellitus; COVID-19, coronavirus disease 2019. a CD3+ Cell count. b CD3+ Cell percentage. c CD3+ CD4+ cell count. d CD3+ CD4+ cell percentage. e CD3+ CD8 + cell count. f CD3+ CD8 + cell percentage. G. Ratio of CD4 + /CD8 + cells. Unpaired one-way ANOVA was used for intergroup comparisons (a, c, P all < 0.0001; d P < 0.01; e, f P all < 0.05). Unpaired t-tests was used for comparisons with the control group, *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001