Prevalence and incidence rates of psoriatic arthritis in central Norway: data from the Nord-Trondelag Health Study (HUNT)

摘要

Background A wide range in the prevalence (<0.01-0.25%) and incidence (0.5-23.1/100 000) of psoriatic arthritis (PsA) is reported. The main objective of this study was to examine the prevalence and incidence of PsA in central Norway.