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Sørensen and Hetland state in their article1 and in their reply to a comment by Sykes et al2 a dramatic decrease of the delay in diagnosis for patients with ankylosing spondylitis since the year 2000. The results of their study can be summarised in the following way:
For patients with a disease onset 10 years ago and a diagnosis made in the following 10 years, the delay in diagnosis was 0–10 years, average 5 years.
For patients with a disease onset 6 years ago and a diagnosis made in the following 6 years, the delay in diagnosis was 0–6 years, average 3 years.
And for patients with a disease onset …