Int J Med Inform - The MITRE Identification Scrubber Toolkit: design, training, and assessment.

Tópicos

{ record(1888) medic(1808) patient(1693) }
{ use(976) code(926) identifi(902) }
{ extract(1171) text(1153) clinic(932) }
{ data(1714) softwar(1251) tool(1186) }
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Resumo

RPOSE: Medical records must often be stripped of patient identifiers, or de-identified, before being shared. De-identification by humans is time-consuming, and existing software is limited in its generality. The open source MITRE Identification Scrubber Toolkit (MIST) provides an environment to support rapid tailoring of automated de-identification to different document types, using automatically learned classifiers to de-identify and protect sensitive information.METHODS: MIST was evaluated with four classes of patient records from the Vanderbilt University Medical Center: discharge summaries, laboratory reports, letters, and order summaries. We trained and tested MIST on each class of record separately, as well as on pooled sets of records. We measured precision, recall, F-measure and accuracy at the word level for the detection of patient identifiers as designated by the HIPAA Safe Harbor Rule.RESULTS: MIST was applied to medical records that differed in the amounts and types of protected health information (PHI): lab reports contained only two types of PHI (dates, names) compared to discharge summaries, which were much richer. Performance of the de-identification tool depended on record class; F-measure results were 0.996 for order summaries, 0.996 for discharge summaries, 0.943 for letters and 0.934 for laboratory reports. Experiments suggest the tool requires several hundred training exemplars to reach an F-measure of at least 0.9.CONCLUSIONS: The MIST toolkit makes possible the rapid tailoring of automated de-identification to particular document types and supports the transition of the de-identification software to medical end users, avoiding the need for developers to have access to original medical records. We are making the MIST toolkit available under an open source license to encourage its application to diverse data sets at multiple institutions.

Resumo Limpo

rpose medic record must often strip patient identifi deidentifi share deidentif human timeconsum exist softwar limit general open sourc mitr identif scrubber toolkit mist provid environ support rapid tailor autom deidentif differ document type use automat learn classifi deidentifi protect sensit informationmethod mist evalu four class patient record vanderbilt univers medic center discharg summari laboratori report letter order summari train test mist class record separ well pool set record measur precis recal fmeasur accuraci word level detect patient identifi design hipaa safe harbor ruleresult mist appli medic record differ amount type protect health inform phi lab report contain two type phi date name compar discharg summari much richer perform deidentif tool depend record class fmeasur result order summari discharg summari letter laboratori report experi suggest tool requir sever hundr train exemplar reach fmeasur least conclus mist toolkit make possibl rapid tailor autom deidentif particular document type support transit deidentif softwar medic end user avoid need develop access origin medic record make mist toolkit avail open sourc licens encourag applic divers data set multipl institut

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