Tan ESJ, et al. - In an Asian-Pacific population with heart failure (HF), researchers prospectively compared the prevalence of atrial fibrillation (AF) and its clinical correlates across different ethnicities. The study sample consisted of 1,746 patients (62% Asian; 26% women; mean age: 66 years). The investigators found that Asian individuals had a strikingly lower prevalence of AF vs New Zealand (NZ)-European patients with HF. Older subjects tended to have AF, as well as those with higher body mass index. A history of hypertension, stroke, peripheral vascular disease, renal disease, chronic respiratory disease, and increased alcohol intake was more likely to be seen in AF patients; these subjects were less likely to have diabetes. Asian diabetic patients with HF vs Asian patients without diabetes demonstrated less AF, whereas no significant link between diabetes and AF was found among NZ-Europeans. A higher crude composite outcome of mortality and HF hospitalizations at 2 years was reported in relation to AF.