Variable Thoracic and abdominal CT findings Thoracic and abdominal CT findings
Infection-negative (n = 119) Infection-positive (n = 54)
P-value
Age 44.2 ± 15.2 55.1 ± 16.5 <0.001
<65 years 102 (85.7%) 33 (61.1%) <0.001
≥65 years 17 (14.3%) 21 (38.9%)
Gender 0.355
Female 53 (44.5%) 20 (37.0%)
Male 66 (55.5%) 34 (63.0%)
Vital sign
Systolic BP at ED triage (mmHg) 122 (100-145) 109 (100-132) 0.008
Diastolic BP at ED triage (mmHg) 78 (70-82) 74 (70-80) 0.258
Pulse at ED triage(bpm) 108 (92-126) 117 (96-128) 0.035
RR at ED triage (bpm) 18 (18–21) 18 (18–22) 0.835
Temperature at ED triage (°C) 38.4 (38.2-39.0) 38.6 (38.3-39.9) 0.791
Oxygen saturation at ED triage (%) 95 (90-96) 94 (90-96) 0.821
Inflammatory biomarkers
PCT (ng/mL) 0.5 (0.2-1.3) 1.6 (0.7-3.9) 0.001
CRP (mg/L) 148 (93-224) 166 (95-254) 0.241
WBC (× 109/L) 16.7 (10.1-28.4) 15.1 (10.5-20.7) 0.183
Comorbidities 0.003
Absent 79 (66.4%) 23 (42.6%)
Present 40 (33.6%) 31 (57.4%)