Mortality rates for patients with antineutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis in the US have decreased over the past 20 years, a study shows.

US researchers used data from the Centres for Disease Control and Prevention from 1999- 2017, which showed there were 11,316 ANCA associated vasculitis-related deaths during the period.

This resulted in an age-adjusted mortality rate of 1.86 per million people.

During this period, the mortality rate decreased by an average of 1.6% per year, with an even greater decrease among patients aged 65-74 (2.5% per year), the researchers reported in Annals of Internal Medicine.