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Table 1 Classification of D2T and non-D2T patients in structured routine care data

From: Identification and prediction of difficult-to-treat rheumatoid arthritis patients in structured and unstructured routine care data: results from a hackathon

Classification in structured data

Validation

Clinically classified D2T RA*

Clinically classified non-D2T RA*

Newly classified patients in the UPOD

Total

D2T RA

25

2

43

70

Non-D2T RA

27

98

1678

1803

Total

52

100

1721

1873

  1. Patients were classified by applying the D2T RA definition [8] in structured routine care data from the UPOD
  2. D2T difficult-to-treat, DAS28-ESR disease activity score based on 28-joint count and erythrocyte sedimentation rate, RA rheumatoid arthritis, UPOD Utrecht Patient Oriented Database
  3. *Clinical classification of D2T and non-D2T RA patients as performed in the cross-sectional study [6]