Article Text
Correspondence
Important but incomplete data analysis?
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We are grateful to the article about incidence and prevalence of psoriatic arthritis (PsA) in Denmark by Egeberg et al.1 The comprehensive health registers from Denmark and other Nordic countries have proven to yield many insights into the epidemiology of chronic diseases. The authors of the article provide very detailed information about the age-specific incidence of PsA, including its time trend. However, we have a question about reporting the overall age-specific incidence rate, combined for both sexes. Could the authors comment …
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Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.
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