Table 4: Lab tests of COVID-19 in elderly and non-elderly patients.
| Variables | Normal range | All 28 | Elderly 12 (42.9) | Non-elderly 16 (57.1) | P |
| Median ± IQR | |||||
| WBC (×109/L), Mean ± SD | 4-10 | 10.4 ± 5.0 | 11.9 ± 5.6 | 9.3 ± 4.4 | 0.177† |
| Increased | 12 (42.9) | 7(58.3) | 5 (31.3) | 0.148† | |
| L (×109/L), Mean ± SD | 0.8-4.0 | 0.7 ± 0.3 | 0.7 ± 0.3 | 0.8 ± 0.3 | 0.446†* |
| Decreased | 19 (67.9) | 9 (75) | 10 (62.5) | 0.388† | |
| HGB (g/L), Mean ± SD | 110-160 | 129.9 ± 20.0 | 120.8 ± 22.1 | 136.7 ± 15.7 | 0.035†* |
| Decreased | 6 (21.4) | 5 (41.7) | 1 (6.25) | 0.036†* | |
| PLT (×109/L), Mean ± SD | 100-300 | 221.1 ± 111.9 | 181.4 ± 101.0 | 250.9 ± 113.4 | 0.105† |
| Decreased | 2 (7.1) | 2 (16.7) | 0 (0) | 0.175† | |
| PCT (ug/L) | 0-0.5 | 0.2 ± 0.2 | 0.3 ± 0.1 | 0.2 ± 0.1 | 0.001¶* |
| Increased | 3 (10.7) | 3 (25) | 0 (0) | 0.067† | |
| BNP (ng/L)§ | 0-300 | 781.4 ± 2018.4 | 916.5 ± 3000.3 | 275.5 ± 654.3 | 0.157¶ |
| Increased | 14 (77.7) | 9 (90) | 5 (62.5) | 0.429† | |
| ALT (U/L) | 0-40 | 37.0 ± 23.0 | 44.0 ± 49.0 | 36.0 ± 22.0 | 0.430¶ |
| Increased | 12 (42.9) | 6 (50) | 6 (37.5) | 0.391† | |
| AST (U/L) | 0-40 | 35.0 ± 33.0 | 35.0 ± 36.0 | 33.0 ± 34.0 | 0.834¶ |
| Increased | 11 (39.3) | 3 (25) | 8 (50) | 0.172† | |
| ALB (g/L) | 30-50 | 29.9 ± 6.4 | 27.5 ± 2.5 | 32.3 ± 4.6 | 0.010¶* |
| Decreased | 16 (57.1) | 10 (83.3) | 6 (37.5) | 0.019†* | |
| TBIL (umol/L) | 0-22 | 17.4 ± 12.5 | 25.4 ± 22.3 | 13.2 ± 7.6 | 0.227¶ |
| Increased | 9 (32.1) | 6 (50) | 3 (18.8) | 0.090† | |
| BUN (mmol/L) | 2.5-9.4 | 6.8 ± 4.1 | 9.2 ± 10.0 | 6.3 ± 1.8 | 0.210¶ |
| Increased | 7 (25) | 5 (41.7) | 2 (12.5) | 0.093† | |
| CK(U/L) | 24-204 | 84.0 ± 157.0 | 133.0 ± 394.0 | 81.0 ± 140.0 | 0.516¶ |
| Increased | 7 (25) | 4 (33.3) | 3 (18.8) | 0.328† | |
| CK-MB (U/L) | 0-24 | 14.0 ± 11.0 | 22.4 ± 24.0 | 13.0 ± 5.0 | 0.077¶ |
| Increased | 5 (17.9) | 5 (41.7) | 0 (0) | 0.008†* | |
| LDH (U/L) | 109-245 | 409.0 ± 233.0 | 638.0 ± 814.0 | 385.0 ± 121.0 | 0.131¶ |
| Increased | 26 (92.9) | 11 (91.7) | 15 (93.8) | 0.683† | |
| K (mmol/L) | 3.5-5.6 | 3.9 ± 1.1 | 3.3 ± 1.4 | 4.1 ± 0.8 | 0.103¶ |
| Decreased | 8 (28.6) | 7 (58.3) | 1 (6.25) | 0.004†* | |
| Na (mmol/L) | 130-150 | 137.0 ± 5.0 | 139.0 ± 7.0 | 135.0 ± 4.0 | 0.013¶* |
| Decreased | 2 (7.1) | 1 (8.3) | 1 (6.25) | 0.683† | |
| PT (s) | 9-14 | 12.4 ± 2.7 | 14.0 ± 2.8 | 11.6 ± 1.7 | 0.031¶* |
| Increased | 7 (25) | 5 (41.7) | 2 (12.5) | 0.093† | |
| APTT (s) | 22-38 | 26.5 ± 9.7 | 30.4 ± 9.7 | 24.8 ± 8.0 | 0.078¶ |
| Increased | 2 (7.1) | 2 (16.7) | 0 (0) | 0.175† | |
| INR | 0.8-1.5 | 1.06 ± 0.26 | 1.3 ± 0.3 | 1.0 ± 0.2 | 0.027¶* |
| Increased | 1 (3.6) | 1 (8.3) | 0 (0) | 0.429† | |
| D-D (ug/ml) | 0-1 | 3.0 ± 6.32 | 4.2 ± 8.9 | 2.8 ± 0.3 | 0.816¶ |
| Increased | 19 (67.9) | 8 (66.7) | 11 (68.8) | 0.429† | |
| LAC (mmol/L) | 0.5-2.0 | 1.4 ± 0.8 | 2.2 ± 1.5 | 1.2 ± 0.7 | 0.094¶ |
| Increased | 7 (25) | 6 (50) | 1 (6.25) | 0.429† |
(%) is the percentage of the proportion in this group;
*P < 0.05; †Independent sample t-test; ‡Chi-square test; §Mann-Whitney U test; ¶10 cases were unavailable.