Table 1.
Baseline characteristics and laboratory parameters between two groups in this study
| Characteristics | Survivor group (n = 26) | Nonsurvivor group (n = 19) | Statistical values | P |
|---|---|---|---|---|
| Age (years), mean ± SD | 75.1 ± 6.1 | 78.6 ± 7.9 | −1.678* | 0.101 |
| Male, n (%) | 16 (61.5) | 11 (57.9) | 0.061† | 0.805 |
| BMI (kg/m2), mean ± SD | 23.2 ± 4.4 | 22.6 ± 4.8 | 0.451* | 0.654 |
| APACHE II scores, mean ± SD | 20.3 ± 3.9 | 22.0 ± 3.5 | −1.498* | 0.141 |
| Primary site of infection, n (%) | ||||
| Respiratory | 20 (76.9) | 12 (63.2) | 1.013† | 0.314 |
| Urinary | 1 (3.9) | 0 (0.0) | ||
| Hepatobiliary | 1 (3.9) | 2 (10.5) | ||
| Soft tissue | 1 (3.9) | 0 (0.0) | ||
| Miscellaneous | 3 (11.5) | 5 (26.3) | ||
| Comorbidity, n (%) | ||||
| Hypertension | 14 (53.8) | 5 (26.3) | 3.411† | 0.065 |
| Diabetes mellitus | 10 (38.5) | 6 (31.6) | 0.227† | 0.634 |
| COPD | 9 (34.6) | 3 (15.8) | 1.990† | 0.158 |
| Laboratory parameters | ||||
| WBC (×109/L), mean ± SD | 11.2 ± 4.8 | 15.3 ± 6.2 | −2.527* | 0.015 |
| HGB (×109/L), mean ± SD | 125.2 ± 23.3 | 109.4 ± 33.1 | 1.881* | 0.067 |
| PLT (×109/L), median (IQR) | 208.5 (120.0) | 168.0 (147.0) | 1.184‡ | 0.237 |
| Serum sodium (mmol/L), mean ± SD | 137.2 ± 5.7 | 135.5 ± 7.0 | 0.932* | 0.356 |
| Serum potassium (mmol/L), mean ± SD | 3.4 ± 0.6 | 3.8 ± 0.8 | −1.836* | 0.073 |
| Serum creatinine (µmol/L), median (IQR) | 75.3 (52.1) | 190.2 (150.1) | −2.781‡ | 0.005 |
| Serum cholesterol (mmol/L), mean ± SD | 3.93 (1.2) | 3.44 (1.6) | 1.804‡ | 0.071 |
| Serum albumin (g/L), mean ± SD | 32.0 ± 5.9 | 24.9 ± 5.8 | 3.995* | <0.001 |
| TBIL (µmol/L), median (IQR) | 11.5 (17.0) | 7.9 (8.9) | 0.896‡ | 0.370 |
| CRP (mg/L), median (IQR) | 38.4 (79.1) | 104.0 (124.0) | −1.517‡ | 0.129 |
| PCT (ng/ml), median (IQR) | 0.4 (4.0) | 1.6 (4.9) | −1.384‡ | 0.166 |
*t value; †Chi-square value; ‡Z value. BMI: Body mass index; APACHE II: Acute Physiology and Chronic Health Evaluation II; COPD: Chronic obstructive pulmonary diseases; WBC: White blood cell; HGB: Hemoglobin; PLT: Platelet; TBIL: Total bilirubin; CRP: C-reactive protein; PCT: Procalcitonin; IQR: Interquartile range; SD: Standard deviation. *t value, †: χ2 value, ‡: Z value.