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Impact of age and sex on the incidence and prevalence of psoriatic arthritis
  1. Alexander Egeberg1,
  2. Lars Erik Kristensen2
  1. 1Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
  2. 2Department of Rheumatology, The Parker Institute Copenhagen, University Hospital, Bispebjerg and Frederiksberg, Copenhagen, Denmark
  1. Correspondence to Dr Alexander Egeberg, Department of Dermatology and Allergy, Herlev and Gentofte Hospital, Kildegårdsvej 28, 2900 Hellerup, Denmark; alexander.egeberg{at}gmail.com

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We thank Sewerin and colleagues1 for the interest in our paper regarding the incidence and prevalence of psoriatic arthritis (PsA).2 The questions that were raised are relevant and important. Our paper included only a limited amount of age-stratified and sex-stratified estimates. The sex distribution among patients with (rheumatologist-diagnosed) incident PsA based on the population described in our initial publication2 is presented in figure 1. However, we emphasise that interpretation …

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