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DAPSA versus cDAPSA: Do we need to use CRP?
  1. Rafaela Silva Guimarães Gonçalves,
  2. Lays Miranda de Almeida Martins,
  3. Henrique de Ataide Mariz,
  4. Andrea Tavares Dantas,
  5. Angela Luzia Branco Pinto Duarte
  1. Department of Rheumatology, Clinical Hospital of Federal University, Recife, Pernambuco, Brazil
  1. Correspondence to Dr Rafaela Silva Guimarães Gonçalves, Hospital das Clinicas de pernambuco, Recife 50670-901, Brazil; rafa_sgg{at}

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In recent years, there has been a paradigm shift towards the development of disease activity indexes that correspond to the clinical measures and also the results reported by the patients, thus capturing the total burden of the disease.1

Disease Activity Index for Psoriatic Arthritis (DAPSA)2 is an index for measuring disease activity in psoriatic arthritis (PsA) that use C-reactive protein (CRP) as activity biomarker. Recently, van Mens et al1 shown that the use of clinical DAPSA (cDAPSA) was similar to DAPSA using CRP. Our objective is evaluating whether CRP influences the achievement of different DAPSA disease states, and therefore we compared DAPSA with and without CRP.


Trained rheumatology collected clinical data from 124 eligible patients, including swollen and tender joint count (SJC 66 and TJC 68 joints).

DAPSA is calculated with the number of painful joints …

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