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L.C. Coates, T. Aslam, F. Al Balushi, A.D. Burden, E. Burden-The, A.R. Caperon, R. Cerio, C. Chattopadhyay, H. Chinoy, M.J.D. Goodfield, L. Kay, S. Kelly, B.W. Kirkham, C.R. Lovell, H. Marzo-Ortega, N. McHugh, R. Murphy, N.J. Reynolds, C.H. Smith, E.J.C. Stewart, R.B. Warren, R. Waxman, H.E. Wilson and P.S. Helliwell Comparison of three screening tools to detect psoriatic arthritis in patients with psoriasis (CONTEST study) British Journal of Dermatology 168

Version of Record online: 25 MAR 2013 | DOI: 10.1111/bjd.12190

What’s already known about this topic?

  •  A number of screening questionnaires have been developed to detect psoriatic arthritis in people with psoriasis.
  •  Each questionnaire has shown good and largely equivalent performance, in terms of specificity and sensitivity, in the development cohorts.
  •  What is needed is a head-to-head study in a new cohort of patients with psoriasis.

What does this study add?

  •  Each of the questionnaires performed worse in this new cohort of patients in secondary care, with no significant differences between them.
  •  Both sensitivity and specificity were worse, although the study design was likely to underestimate the specificity and overestimate the sensitivity.
  •  Screening questionnaires such as these will detect other musculoskeletal diseases in addition to psoriatic arthritis and additional information may be needed to enhance their specificity.

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