Figure 2. Risks of Incident Arrhythmias for Each Category Increase in Daily Coffee Intake.

The relative hazard of each incident arrhythmia for each increasing category of coffee consumption (0-1, 2-3, 4-5, or ≥6 cups per day) is shown. Hazard ratios (HRs) are adjusted for basic demographic characteristics (age, sex, and ethnicity), body mass index, educational level, other comorbid conditions (hypertension, diabetes, hyperlipidemia, coronary heart disease, congestive heart failure, valvular heart disease, cerebrovascular disease, peripheral artery disease, chronic kidney disease, and cancer), smoking habits, alcohol consumption, tea consumption, and physical activity. Error bars indicate 95% CIs.