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AHRQ: Agency for Healthcare Research and Quality

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Showing results for "time".

  1. Healthcare Cost and Utilization Project (HCUP) NEDS Notes

    hcup-us.ahrq.gov/db/vars/key_ed/nedsnote.jsp
    May 01, 2015 - KEY_ED is a unique record identifier and cannot be used to track a person over time.  
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