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Fig. 1 | Arthritis Research & Therapy

Fig. 1

From: Handwork vs machine: a comparison of rheumatoid arthritis patient populations as identified from EHR free-text by diagnosis extraction through machine-learning or traditional criteria-based chart review

Fig. 1

Study workflow depicting the model development and evaluation procedure (orange section) and the criteria comparison analysis (blue section), whereby the important analysis-steps are highlighted in green. We ran the SVM identification on all 17,662 patients of the Rheumatology outpatient clinic. Next, we selected only those patients that were also included in the EAC (n=1188) and who were annotated for the 1987 and 2010 criteria, resulting in a final selection of 1127 patients for the final analysis. The patient collections are indicated by a wave line box, whereby the initial two data sources are colored red (rheumatology outpatient clinic = patients from the Leiden outpatient clinic with the first consult after 2011; early arthritis cohort = research cohort patients with the first consult after 2011).

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Arthritis Research & Therapy

ISSN: 1478-6362

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