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Updated: Apr 14, 2026
Design and Analysis for Fall Detection System Simplification
Published on: April 6, 2020
Improving identification of fall-related injuries in ambulatory care using statistical text mining
Stephen L Luther1, James A McCart, Donald J Berndt
1Stephen L. Luther, James A. McCart, Bridget Hahm, Dezon Finch, Philip R. Foulis, William A. Lapcevic, Robert R. Campbell, and Gail Powell-Cope are with the HSR&D Center of Innovation on Disability and Rehabilitation Research, James A. Haley Veterans Hospital, Tampa, FL. Donald J. Berndt is with the University of South Florida College of Business Administration, Tampa. Jay Jarman is with the East Tennessee State University Department of Computing, Johnson City. Ronald I. Shorr is with the North Florida/South Georgia Veterans Health System, Gainesville, FL. Keryl Motta Valencia is with the VA Caribbean Healthcare System, San Juan, PR.
Objectives:
We determined whether statistical text mining (STM) can identify fall-related injuries in electronic health record (EHR) documents and the impact on STM models of training on documents from a single or multiple facilities.
Methods:
We obtained fiscal year 2007 records for Veterans Health Administration (VHA) ambulatory care clinics in the southeastern United States and Puerto Rico, resulting in a total of 26 010 documents for 1652 veterans treated for fall-related injury and 1341 matched controls. We used the results of an STM model to predict fall-related injuries at the visit and patient levels and compared them with a reference standard based on chart review.
Results:
STM models based on training data from a single facility resulted in accuracy of 87.5% and 87.1%, F-measure of 87.0% and 90.9%, sensitivity of 92.1% and 94.1%, and specificity of 83.6% and 77.8% at the visit and patient levels, respectively. Results from training data from multiple facilities were almost identical.
Conclusions:
STM has the potential to improve identification of fall-related injuries in the VHA, providing a model for wider application in the evolving national EHR system.
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