Significant associations were found among sleep duration and age, sex, education level, income level, smoking status, drinking status, physical activity, family history of stroke, body mass index, systolic blood pressure, diastolic blood pressure, fasting blood glucose, total cholesterol, hypotensive drug use, lipid-lowering drug use, hypoglycemic drug use, history of myocardial infarction, snoring status, high sensitive C-reactive protein, and atrial fibrillation. This evidence concerns the gene CRP and atrial fibrillation.