Advertisement
Letter| Volume 127, ISSUE 2, P238-239, February 2000

Download started.

Ok

Misclassification of hospital procedure volume in surgical outcomes studies

      Birkmeyer et al
      • Birkmeyer JD
      • Finlayson SRG
      • Tosteson ANA
      • Sharp SM
      • Warshaw AL
      • Fisher ES
      Effect of hospital volume on in-hospital mortality with pancreaticoduodenectomy.
      used data from Medicare claims files to demonstrate a 4-fold difference in the in-hospital mortality rate for major pancreatic surgery between centers with a high volume (4.1%) and a very low volume (16.1%) of these procedures. They also demonstrated evidence of a trend for decreased in-hospital mortality with higher surgical volumes by using the Mantel extension test.
      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'

      Subscribe:

      Subscribe to Surgery
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect

      References

        • Birkmeyer JD
        • Finlayson SRG
        • Tosteson ANA
        • Sharp SM
        • Warshaw AL
        • Fisher ES
        Effect of hospital volume on in-hospital mortality with pancreaticoduodenectomy.
        Surgery. 1999; 125: 250-256
        • Birkett NJ
        Effect of nondifferential misclassification on estimates of odds ratios with multiple levels of exposure.
        Am J Epidemiol. 1992; 136: 356-362
        • Dosemeci M
        • Wacholder S
        • Lubin JH
        Does nondifferential misclassification of exposure always bias a true effect toward the null value?.
        Am J Epidemiol. 1990; 132: 746-748