Figure 1.

Estimated percent increase in cardiac ectopy for a serving per week increase in coffee, tea, or chocolate consumption. The unadjusted (white square) and adjusted (black square) estimates shown are after adjustment for clinic site, age, sex, race, income, education level, body mass index, dietary caloric intake, smoking status, number of alcoholic drinks per week, diabetes, hypertension, coronary artery disease, atrial fibrillation, congestive heart failure, and use of β‐blockers, calcium channel blockers, digoxin, class I antiarrhythmics, and class III antiarrhythmics. Y error bars denote 95% CIs. PAC indicates premature atrial contraction; PVC, premature ventricular contraction; SVT, number of runs of supraventricular tachycardia; VT, number of runs of ventricular tachycardia.