“…The clinical data were collected through electronic medical record systems, including gender, age (older than 60 is defined as the elderly 5 ), body mass index (BMI) (following the World Health Organization standard, which defines BMI > 23.9 as indication of overweight 6 ), history of smoking, history of drinking, comorbidities (cardiovascular diseases, diabetes, interstitial lung disease, chronic obstructive pulmonary disease, malignant hematological diseases and malignant solid tumors, kidney diseases), clinical symptoms, the severity of pneumonia, hospitalization (bounded by mean 7 ), antirheumatic drugs, including nonsteroidal anti‐inflammatory drugs (NSAIDs), glucocorticoid (GC) (prednisone acetate, which was divided into 3 groups: GC ≤10 mg/d and GC > 10 mg/d, none). Disease‐modifying anti‐rheumatic drugs (DMARDs) (5 patients used NSAIDs, 11 patients used GC, and 9 patients used DMARDs).…”