Predictor Variables
Patient age, sex, body-mass index, comorbidities, antiviral agent
treatment and laboratory test results on admission were extracted. The
total number of comorbidities were evaluated included hypertension,
diabetes mellitus, cardiovascular disease, nervous system diseases,
respiratory disease and others (arthrolithiasis, hepatitis B, renal
failure, and rheumatoid). Electrocardiogram abnormalities included sinus
tachycardia, ST elevation up or depression, Premature atrial
contraction, T-wave inversion, and P pulmonale).Patient medical costs
were also evaluated.