GPT and chronic obstructive pulmonary disease: The LGBM algorithm selected the 30 most crucial features from the entire set, which encompassed: sex type, age, BMI, CCI score, vaccination before having PCR test, COVID-19 medications, comorbidities including cardiovascular disease, COPD, renal disease, depression or anxiety, long-term medication such as NSAID, drugs for hypertension, drugs for GORD, aspirin, statin, antihyperuricemic, laboratory test results contain AST (GOT), ALT (GPT), creatinine, RBC, hemoglobin, MCH.