Hospital variation in sphincter preservation for elderly rectal cancer patients

Christopher M. Dodgion, Bridget A. Neville, Stuart R. Lipsitz, Deborah Schrag, Elizabeth Breen, Michael J. Zinner, Caprice C. Greenberg

Research output: Contribution to journalArticle

Abstract

Background The primary goal of an operation for rectal cancer is to cure cancer and, where possible, preserve continence. A wide range of sphincter preservation rates have been reported. This study evaluated hospital variation in the use of low anterior resection (LAR), local excision (LE), and abdominoperineal resection (APR) in the treatment of elderly rectal cancer patients. Methods Using Surveillance, Epidemiology, and End Results-Medicare linked data, we identified 4959 patients older than 65 y with stage I-III rectal cancer diagnosed from 2000-2005 who underwent operative intervention at one of 370 hospitals. We evaluated the distribution of hospital-specific procedure rates and used generalized mixed models with random hospital effects to examine the influence of patient characteristics and hospital on operation type, using APR as a reference. Results The median hospital performed APR on 33% of elderly patients with rectal cancer. Hospital was a stronger predictor of LAR receipt than any patient characteristic, explaining 32% of procedure choice, but not a strong predictor of LE, explaining only 3.8%. Receipt of LE was primarily related to tumor size and tumor stage, which combined explained 31% of procedure variation. Conclusions Receipt of LE is primarily determined by patient characteristics. In contrast, the hospital where surgery is performed significantly influences whether a patient undergoes an LAR or APR. Understanding the factors that cause this institutional variation is crucial to ensuring equitable availability of sphincter preservation.

Original languageEnglish (US)
Pages (from-to)161-168
Number of pages8
JournalJournal of Surgical Research
Volume191
Issue number1
DOIs
StatePublished - Sep 2014

Keywords

  • Elderly
  • Hospital variation
  • Rectal cancer
  • Sphincter sparing surgery

ASJC Scopus subject areas

  • Surgery

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    Dodgion, C. M., Neville, B. A., Lipsitz, S. R., Schrag, D., Breen, E., Zinner, M. J., & Greenberg, C. C. (2014). Hospital variation in sphincter preservation for elderly rectal cancer patients. Journal of Surgical Research, 191(1), 161-168. https://doi.org/10.1016/j.jss.2014.03.047