Age, ApoA1, white blood cell count, MCV, the proportion of female, daily smokers, and history of CHD increased with increasing RDW (all p < 0.001), whereas it was opposite for waist circumference, diastolic blood pressure, ApoB, ApoB/ApoA1 ratio, hemoglobin, the proportion of diabetes, and history of anti-hypertensive medication (all p < 0.001). This evidence concerns the gene APOA1 and coronary artery disorder.