Figure 2. Unadjusted association of sleep-disordered breathing (categorized by severity) with cardiac arrhythmias.

*Tachyarrhythmia is defined as ventricular and supraventricular tachycardia. ^† Complex ventricular ectopy (CVE) is defined as bigeminy or trigeminy or quadrigeminy or nonsustained ventricular tachycardia. ^‡ Combined supraventricular tachycardia (CST) is defined as atrial fibrillation or supraventricular tachycardia. ICD, intraventricular conduction delay.