Table 1. Laboratory values, cases vs. controls.
| Variable | Cases (n = 65) | Controls (n = 37) | P-value |
| Degree of fever (>39°C) | 26 (40) | 6 (16.2) | 0.000* |
| Duration of fever (>3 days) | 42 (64.6) | 7 (18.9) | 0.000* |
| Length of in-hospital stay (>5 d), n(%) | 35 (53.8) | 12 (32.4) | 0.008* |
| Heart rate (>130/min), n (%) | 31 (47.7) | 12 (32.4) | 0.005* |
| Respiratory rate (>35/min), n (%) | 27 (41.5) | 8 (21.6) | 0.000* |
| WBC×109/l, mean (± SD) | 10.44±3.85 | 10.29±3.23 | 0.832 |
| PMN percent, mean (± SD) | 49.33±16.68 | 50.49±15.59 | 0.738 |
| Lymphocytes percent, mean (± SD) | 44.39±16.11 | 41.03±15.04 | 0.319 |
| RBC×1012/l, mean (± SD) | 4.35±0.30 | 4.40±0.33 | 0.619 |
| Hemoglobin g/l, mean (± SD) | 111.48±19.22 | 106±25.96 | 0.215 |
| Hematocrit percent, mean (± SD) | 44.19±3.72 | 34.45±2.75 | 0.185 |
| SGOT U/l, mean (± SD) | 34.83±10.08 | 38.58±20.73 | 0.242 |
| LDH U/l, mean (± SD) | 294.89±43.07 | 295.67±57.85 | 0.116 |
| CPK U/l, mean (± SD) | 100.19±91.42 | 77.40±41.01 | 0.153 |
| α-hydroxybutyric acid U/l, mean (± SD) | 199.27±36.44 | 190.42±45.78 | 0.100 |
| C-reactive protein mg/l, mean (± SD) | 8.98±15.84 | 11.89±17.33 | 0.368 |
| IgM g/l, mean (± SD) | 1.18±0.35 | 1.51±2.32 | 0.075 |
| IgA g/l, mean (± SD) | 0.47±0.21 | 0.49±0.29 | 0.071 |
| IgG g/l, mean (± SD) | 7.26±3.38 | 6.99±2.16 | 0.471 |
| C3 g/l, mean (± SD) | 1.31±0.27 | 1.26±0.30 | 0.806 |
| C4 g/l, mean (± SD) | 0.29±0.11 | 0.35±0.22 | 0.054 |
| NSE ng/ml, mean (± SD) | 22.10±8.66 | 190.42±45.78 | 0.485 |
| HEV71 positive, n (%) | 50(76.9) | 17(45.9) | 0.000* |
SD, standard deviation; WBC, white blood cells; PMN, polymorphonuclear neutrophils; RBC, red-blood cell; SGOT, serum glutamic oxaloacetic transaminase; LDH, lactate dehydrogenase; CPK, creatine phosphokinase; NSE, neuron-specific enolase.
*Statistically significant difference.