NLM Scrubber: NLM s Software Application to De-identify Clinical Text Documents

Background: Electronic health records contain a vast amount of data about diseases and treatments. Researchers could use this data to test their ideas, but they would need to use records from more than just their own group of patients. But access to those records is restricted to ensure patient privacy. U.S. National Library of Medicine (NLM) has created a computer tool called NLM Scrubber. This program recognizes and deletes personal information from health records. The researchers who developed this program now need access to the original records. This will allow them to see how well the program removes personal information from patient records and how they can make it more accurate. Objectives: To find ways to improve clinical text de-identification. Eligibility: No new participants. Researchers will review data that have already been collected. Design: Researchers will collect a random sample of reports. These will be from different doctors in different fields. Researchers will manually remove personal information from the records. Researchers will also automatically remove personal information from original records using NLM-Scrubber. Researchers will compare the results of the computer program versus the manual changes. They will note when the program has not been removing personal information correctly. They will also note when the program has been deleting nonpersonal health information incorrectly. Researchers will use the results to revise the program. They will keep testing it until the de-identification process is complete.