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We thank Dr Sykes and colleagues1 for their interest in our publication2 on changes in diagnostic delay in patients with inflammatory arthritis from year 2000 to year 2011 and for their reflections regarding our investigations. Based on data from the nationwide Danish DANBIO registry, we studied diagnostic delay defined as the time between onset of symptoms and the time of diagnosis in 13 721 patients with rheumatoid arthritis (RA), psoriatic arthritis (PSA) and ankylosing spondylitis (AS). We found that for RA, PSA and AS, the delay decreased from 30 …
Competing interests None.
Ethics approval Register study.
Provenance and peer review Commissioned; internally peer reviewed.
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