Does Evidence-Based PTS Treatment Reduce PTS Symptoms and Suicide in Iraq and Afghanistan Veterans Seeking VA Care
Technical Report,15 Apr 2016,14 Apr 2017
Northern California Institute for Research and Education (NCIRE) San Francisco United States
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We succeeded in developing a Natural Language Processing NLP System with excellent performance characteristics for determining the type of psychotherapy described in VA clinical notes. We found that positive predictive value was greater than .91 and sensitivity was greater than .92 for all types of posttraumatic stress PTS evidence-based treatmentEBT, including Cognitive Processing Therapy CPT individual and group, and Prolonged Exposure PE individual therapy. We completed seven major annotation projects resulting in over 11,935 documents, 1,297 of which were annotated by four people quadruple-annotated and7,226 of which were double annotated. We also developed an NLP system to extract PT Checklist PCL scores from clinical notes with excellent accuracy 98 positive predictive value.