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Slide Presentation of the 2007 Annual Meeting of AHRQ

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Study Design

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  • Survey of all residents/fellows in the 76 accredited training programs at MGH & BWH
    • 2003 (pre-implementation) and 2004 (post-implementation)
  • Goal of Primary Study—to assess self-reported workhours of residents
    • Secondary goal—to report on patient safety events
  • All residents were classified post-hoc based upon mean self-reported workhours for their program into:
    • Reduced hours programs
    • All other programs
  • Pre-post analysis -- Difference in Differences


Programs were classified as "reduced hours" if mean weekly duty hours in 2003 exceeded 65 and decreased by at least 5 hours between 2003 and 2004.

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