Table 1 Characteristics of patients with COVID-19. Demographic Clinical classifications on admission Outcome at composite endpoint Mild/ordinary cases Severe cases Critical cases Total Hospital discharge Improved Exacerbation Death Total Age, years(x ± s) 57.08 ± 12.92 64.94 ± 12.75 70.18 ± 13.86 63.55 ± 13.86 59.42 ± 14.78 63.94 ± 12.24 67.75 ± 15.36 70.87 ± 10.00 63.55 ± 13.86 Distribution, n (%)  <60 20 (17.4%) 11 (9.6%) 6 (5.2%) 37 (32.2%) 24 (20.9%) 8 (6.9%) 1 (0.8%) 4 (3.5%) 37 (32.2%)  ≥60 19 (16.5%) 37 (32.2%) 22 (19.1%) 78 (67.8%) 28 (24.3%) 24 (20.9%) 7 (6.1%) 19 (16.5%) 78 (67.8%)  Total 39 (33.9%) 48 (41.7%) 28 (24.3%) 115 52 (45.2%) 32 (27.8%) 8 (6.9%) 23 (0.2%) 115 Gender  Male, n (%) 20 (17.4%) 29 (25.2%) 17 (14.8%) 66 (57.4%) 28 (24.3%) 19 (16.5%) 7 (6.1%) 12 (10.4%) 66 (57.4%)  Female, n (%) 19 (16.5%) 19 (16.5%) 11 (9.6%) 49 (42.6%) 24 (20.9%) 13 (11.3%) 1 (0.8%) 11 (9.6%) 49 (42.6%) Total 39 (33.9%) 48 (41.7%) 28 (24.3%) 115 52 (45.2%) 32 (27.8%) 8 (6.9%) 23 (0.2%) 115