Table 2 Univariable and multivariable analyses of various indicators for death within 28 days in all participants Univariable analysis HR (95% CI) p value Multivariable analysis HR (95% CI) p value Hospital  Wuhan Red Cross Hospital 1 (ref)  Wuhan Union West Hospital 0.85 (0.57, 1.28) 0.4347 Age, years 1.05 (1.03, 1.06) <0.0001 1.02 (1.00, 1.04) 0.0252 Sex Female 1 (ref) 1 (ref) Male 2.03 (1.37, 3.01) 0.0004 1.75 (1.17, 2.60) 0.0060 Onset symptoms  Fever No 1 (ref) Yes 0.84 (0.48, 1.44) 0.5191  Cough No 1 (ref) Yes 0.71 (0.47, 1.08) 0.1125  Expectoration No 1 (ref) Yes 1.06 (0.71, 1.58) 0.7788  Muscular soreness No 1 (ref) Yes 0.92 (0.57, 1.47) 0.7256  Fatigue No 1 (ref) Yes 1.07 (0.72, 1.60) 0.7386  Diarrhoea No 1 (ref) Yes 0.83 (0.48, 1.44) 0.5124 Past history of disease  Hypertension Without 1 (ref) With 1.27 (0.85, 1.89) 0.2493  Chronic lung disease Without 1 (ref) With 1.12 (0.41, 3.03) 0.8285  Chronic heart disease Without 1 (ref) With 1.34 (0.75, 2.39) 0.3151  Chronic liver disease Without 1 (ref) With 0.95 (0.30, 2.99) 0.9296  Chronic kidney disease Without 1 (ref) With 2.28 (1.00, 5.19) 0.0496  Cerebrovascular disease Without 1 (ref) With 2.82 (1.31, 6.05) 0.0080  Carcinoma Without 1 (ref) With 1.81 (0.92, 3.58) 0.0876 CRB-65 score 0 1 (ref) 1 (ref) 1–2 4.35 (2.81, 6.72) <0.0001 2.68 (1.56–4.59) 0.0003 3–4 13.80 (5.99, 31.80) <0.0001 5.25 (2.05–13.43) 0.0005 Admission FBG, mmol/l <6.1 1 (ref) 1 (ref) 6.1–6.9 2.06 (1.20, 3.54) 0.0087 1.71 (0.99, 2.94) 0.0524 ≥7.0 3.54 (2.33, 5.38) <0.0001 2.30 (1.49, 3.55) 0.0002