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. 2002 Nov;61(Suppl 3):iii33–iii39. doi: 10.1136/ard.61.suppl_3.iii33

Figure 1 .

Figure 1

Progression of children with juvenile onset undifferentiated spondyloarthropathy to fulfilment of the modified New York diagnostic criteria for AS over a 10 year period. The percentages of patients fulfilling each criterion are shown for each time. Most patients fulfil diagnostic criteria for definite AS after a mean of 7.5 years (range 5–10) after the onset of symptoms of juvenile onset SpA. Reproduced with permission of the authors and Rheumatic Disease Clinics of North America from Burgos-Vargas R et al. Rheum Dis Clin North Am 1997;23:569–98. Copyright © 1997 W B Saunders Company.