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Cohort identification is important in both population health management and research. In this project we sought to assess the use of text queries for cohort identification. Specifically we sought to determine the incremental value of unstructured data queries when added to structured queries for the purpose of patient cohort identification.Three cohort identification tasks were evaluated: identification...
Query expansion is a commonly used approach to improving search results. Specific expansion methods, however, are expected to have different results. We have developed three different expansion methods using knowledge derived from medical thesaurus, medical literature, and clinical notes. Since the three different sources each have strengths and weaknesses, we hypothesized that combining the three...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.