SARS-CoV-2 infection n = 171 SARS-CoV-2 pneumonia n = 127
Age, year 80 (72–86) 80 (72–85)
Gender, male (%) 112 (65.5) 77 (60.6)
Laboratory test
N gene Ct value 30 (27–34) 30 (26–33)
ORF gene Ct value 33 (29–36) 33 (28–36)

Neutrophil, ×109/L

7.5 (5.4–10.4)
7.9 (5.5–10.8)
Lymphocyte, ×109/L 0.8 (0.5–1.0) 0.7 (0.4–1.2)
NLR 9.9 (5.1–18.4) 10.9 (5.9–19.8)
Hemoglobin,g/L 112 (92–129) 109 (92–129)
Thrombocyte, ×109/L 177 (138–256) 177 (121–256)
CRP, mg/dL 19.7 (0.6–47.6) 26 (5.8–48.4)
D-Dimer, mg/L 2.2 (0.6–6.0) 2.5 (0.8–6.8)
FiO2 0.8 (0.4–1.0) 0.6 (0.6–1.0)
PaO2, mmHg 88 (70.7–103.1) 90 (69.6–103)
PF ratio, mmHg 158 (122.7–253.9) 146.7 (112.7–176.6)
PaCO2, mmHg 38.6 (34.5–56.1) 39 (33–52.7)
Quantitative CT analysis
Total lung volume, ml 3088 (2287-3808) 2874 (2274–3644)
GGO volume, ml 833 (654.5–10) 1480 (907.5–2280)
GGO ratio (%) 30.3 (21.1–40.3) 54 (40–63.5)
Consolidation volume, ml 186 (128.5–315.5) 236 (154–349)
Consolidation ratio (%) 7.2 (3.8–9.7) 8.8 (4.5–14.5)