Fig. 7

Comparison of lymphocyte levels and percentages among the four subgroups. DM, diabetes mellitus; non-DM, without diabetes mellitus; COVID-19, coronavirus disease 2019. a Lymphocyte count. b Lymphocyte percentage. Unpaired two-way ANOVA was used for interaction comparisons (a, b, P all > 0.05). Unpaired one-way ANOVA was used for intergroup comparisons (a, b, P all < 0.01). Unpaired t-tests was used for comparisons with the non-severe non-DM subgroup, *P < 0.05, **P < 0.01. Unpaired t-tests was used for comparisons with the severe non-DM subgroup, #P < 0.05, ##P < 0.01