EXTEND

EXTraction of EMR Numerical Data

Overview

EXTraction of EMR Numerical Data (EXTEND) is a natural language processing (NLP) tool that can efficiently extract numerical clinical data from different type of narrative notes with high accuracy. By expanding the dictionary and developing new rules, the usage of EXTEND can be easily expanded to extract additional numerical data important in clinical outcomes research.

EXTEND was developed by Tianrun Cai at Brigham and Women’s Hospital, Katherine P. Liao at Brigham and Women’s Hospital, Frank Rybicki at University of Ottawa, Tianxi Cai at Harvard T.H. Chan School of Public Health.

Access

EXTEND is distributed through the VERITY Research website linked here.

Access to EXTEND can be gained by completing both steps below:

  1. Register for VERITY Membership on the VERITY Research Website. VERITY Membership is free. 
  2. If you are already a VERITY member or have received your membership credentials, you will need to complete a request form which can be found on the page linked here.

Note VERITY membership and subsequent completion of the EXTEND Access Request Form are both required to gain access to EXTEND.

Installation

After access to EXTEND has been granted, you will receive an email with information on installation and usage of the software.

Reference

Cai T, Zhang L, Yang N, Kumamaru KK, Rybicki FJ, Cai T, Liao KP.  EXTraction of EMR numerical data: an efficient and generalizable tool to EXTEND clinical research . BMC Medical Informatics and Decision Making. 2019;19(1):226. doi: 10.1186/s12911-019-0970-1. PMID: 31730484; PMCID: PMC6858776.