Persistence on warfarin in patients with atrial fibrillation: experience in Australia 2006-2009.

Background: Long-term persistence on warfarin in patients with non-valvular atrial fibrillation is essential to minimise thromboembolic complications, especially ischaemic stroke. This study examines persistence in Australian patients with presumed atrial fibrillation newly prescribed warfarin.

Methods: Longitudinal assessment of Pharmaceutical Benefit Scheme payment claim records from October 2006 through September 2009 in a 10% random sample of the Australian population holding long-term concession cards.