Association between sarcopenia and atrial fibrillation incidence in Cox regression models adjusted for PRS or stratified by PRS. Model 1 was adjusted for age, gender, education level, Townsend deprivation index, body mass index, and PRS. Based on model 1, model 2 was further adjusted for the status of drinking and smoking, physical inactivity, dietary pattern, laboratory tests (C‐reactive protein, alanine aminotransferase, creatinine, and albumin), comorbidities (heart failure, valvular heart disease, coronary heart disease, chronic obstructive pulmonary disease, autoimmune diseases, hyperthyroidism, diabetes, hypertension, and hyperlipidemia), and major surgeries. For stratification analysis, the Cox regression model adjusted for all covariates in model 2, except PRS. PRS, polygenic risk score.