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Table 5 Distribution of participants in the PDQ categories according to diagnosis in the test-retest study

From: Psychometric properties of the painDETECT questionnaire in rheumatoid arthritis, psoriatic arthritis and spondyloarthritis: Rasch analysis and test-retest reliability

n
  PDQ score < 13 PDQ score 13–18 PDQ score > 18
  Test Retestc Test Retest Test Retest
RA 4 4 3 4 3 2
PsA 4 5 2 2 4 3
SpA 7 7 2 1 1 2
In total 15 16 7 7 8 7