Moreover, significant differences were noted in age, smoking history, drinking history, associated coronary heart disease, mean systolic blood pressure, RDW_SD, RDW_CV, PLT, TG, TC, HDL, LDL, FT3, CRP, and LAD between the AF and non-AF groups in the whole population (P < .05) (Table 2). This evidence concerns the gene CRP and atrial fibrillation.