Table 2. Laboratory and radiograph findings of the different subtypes in older patients with COVID-19.
| Characteristic | Mild type (n=140) | Severe type (n=63) | Critical type (n=29) | P value |
| Blood routine | ||||
| Leucocyte count (×109/L) | 5.20(4.38-6.48) | 5.0(4.1-6.88) | 8.08(4.4-10.8) | 0.02 |
| Neutrophil count (×109/L) | 3.22(2.59-4.20) | 3.50(2.70-4.80) | 6.65(3.51-9.70) | <0.001 |
| Lymphocyte count (×109/L) | 1.26(0.90-1.60) | 0.98(0.70-1.26) | 0.54(0.45-0.80) | <0.001 |
| Neutrophil count/lymphocyte count | 2.45(1.82-3.65) | 4.08(2.39-6.20) | 9.67(6.86-21.10) | <0.001 |
| Hemoglobin (g/L) | 125.0(113.0-138.0) | 122.0(113.5-133.5) | 121.0(110.5-137.5) | 0.535 |
| Platelet count (×109/L) | 204(170-279) | 175(139-236) | 156(123-191) | <0.001 |
| Coagulation function | ||||
| International normalized ratio | 1.02(0.96-1.06) | 1.01(0.96-1.10) | 1.0(0.97-1.06) | 0.895 |
| Blood biochemistry | ||||
| Albumin (g/L) | 38.40(35.43-41.25) | 36.30(33.30-39.50) | 34.60(30.65-38.45) | 0.001 |
| Alanine aminotransferase (U/L) | 25(16-36) | 24(16-31) | 21(14-31) | 0.664 |
| Aspartate aminotransferase (U/L) | 25(20-33) | 25(19-34) | 29(18-38) | 0.891 |
| Total bilirubin (umol//L) | 9.70(7.0-12.55) | 10.10(7.90-13.15) | 9.10(5.70-14.30) | 0.671 |
| Potassium (mmol/L) | 3.99(3.70-4.37) | 3.89(3.45-4.25) | 3.81(3.50-4.14) | 0.072 |
| Sodium (mmol/L) | 138.0(135.72-140.15) | 137.50(134.95-140.0) | 136.0(130.60-139.0) | 0.027 |
| Blood urea nitrogen (mmol/L) | 4.51(3.83-5.47) | 4.59(3.60-7.10) | 6.16(4.48-8.72) | 0.032 |
| Creatinine (umol/L) | 64.0(54.0-76.5) | 68.0(57.0-84.0) | 76.0(63.0-96.5) | 0.003 |
| Creatinine kinase (U/L) | 56.50(41.25-88.75) | 62.0(26.25-113.75) | 80.0(52.0-173.50) | 0.038 |
| Lactate dehydrogenase (U/L) | 218.0(175.0-256.50) | 233.0(190.0-313.0) | 273.0(243.0-354.0) | <0.001 |
| Infection-related biomarkers | ||||
| C-reactive protein (mg/L) | 16.02(4.41-39.26) | 19.10(5.89-44.70) | 41.86(6.33-70.10) | 0.039 |
| Procalcitonin (ng/mL) | 0.09(0.04-0.14) | 0.05(0.04-0.08) | 0.19(0.04-0.25) | 0.046 |
| Chest radiography/Computed tomography findings | ||||
| Multiple mottling and ground-glass opacity | 34(24.29) | 27(42.86) | 20(68.97) | <0.001 |
Data are presented as medians (interquartile ranges), n (%) and n/N (%).