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An Extraction Tool for Venous Thromboembolism Symptom Identification in Primary Care Notes to Facilitate Electronic Clinical Quality Measure Reporting: Algorithm Development and Validation Study

An Extraction Tool for Venous Thromboembolism Symptom Identification in Primary Care Notes to Facilitate Electronic Clinical Quality Measure Reporting: Algorithm Development and Validation Study

Many false positives arose in early stages of evaluation from failure to detect negation or context, as in the Type C error examples in Table 2. Venous thromboembolism symptom extractor validation performance on notes of case cohort (patients with venous thromboembolism diagnosis). Examples of common sources of symptom extractor false positive errors. For the first example, VTExt captured the symptom hypoxia without identifying the negating phrase “resolution of.”

John Novoa-Laurentiev, Mica Bowen, Avery Pullman, Wenyu Song, Ania Syrowatka, Jin Chen, Michael Sainlaire, Frank Chang, Krissy Gray, Purushottam Panta, Luwei Liu, Khalid Nawab, Shadi Hijjawi, Richard Schreiber, Li Zhou, Patricia C Dykes

JMIR Med Inform 2025;13:e63720