Article Text
Correspondence
Inconsistency between Danish incidence and prevalence data about psoriatic arthritis (PsA)
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We are grateful to Egeberg and Kristensen for presenting the detailed data about the prevalence and incidence of psoriatic arthritis (PsA).1 Based on these detailed information, we tried to estimate the excess mortality of people with diagnosed PsA by uising a mathematical relation between incidence, prevalence and mortality.2 3 During analysis of the incidence and prevalence data, we have made the following observation: if we assume that—on population average—people with PsA do not have a better survival than those without PsA, we can compute a lower …
Footnotes
Handling editor Josef S Smolen
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.