We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleIntroduction to propensity scores: A case study on the comparative effectiveness of laparoscopic vs open appendectomy.AuthorsHemmila, Mark R; Birkmeyer, Nancy J; Arbabi, Saman; Osborne, Nicholas H; Wahl, Wendy L; Dimick, Justin BAbstractTo demonstrate the use of propensity scores to evaluate the comparative effectiveness of laparoscopic and open appendectomy.PublicationArchives of surgery (Chicago, Ill. : 1960), 2010, Vol 145, Issue 10, p939ISSN1538-3644Publication typeJournal ArticleDOI10.1001/archsurg.2010.193