Hospital volume as a surrogate for laparoscopically assisted colectomy

UMMS Affiliation

Department of Surgery

Publication Date


Document Type



Colectomy; Hospitals; Patient Admission; Treatment Outcome; Outcome Assessment (Health Care); Length of Stay


Life Sciences | Medicine and Health Sciences | Surgery


BACKGROUND: Although laparoscopic colectomy is reported to have favorable outcomes compared with open colectomy, it has yet to gain widespread acceptance in the United States. This study sought to investigate whether hospital volume is a factor determining the use of laparoscopy for colectomy.

METHODS: Using the Nationwide Inpatient Sample (NIS, 1998-2006), patients undergoing elective colon resection with and without laparoscopy were identified. Unique hospital identifiers were used to divide hospital volume into equal thirds, with the highest third defined as high volume and the lower two-thirds defined as low volume. The primary end point was the use of laparoscopy after adjustment for patient and hospital covariates.

RESULTS: A total of 209,769 colon resections were performed in the study period. Overall, only 8,407 (4%) of these resections were performed with laparoscopy. High-volume centers, which tended to be large, urban teaching hospitals, treated more patients in the highest income bracket and patients with private insurance than low-volume hospitals (p < 0.0001). High-volume hospitals used laparoscopy more often than low-volume hospitals (5.2% vs. 3.4%). After adjustment for covariates using multivariate analysis and propensity scores, analysis showed that patients with private insurance and those in the highest income bracket were more likely to receive laparoscopy (p < 0.0009). High-volume hospitals were more likely to perform laparoscopically assisted colectomy than low-volume hospitals (odds ratio [OR], 1.42; 95% confidence interval [CI], 1.23-1.56).

CONCLUSIONS: Socioeconomic differences appear to exist between high- and low-volume hospitals in the use of laparoscopy. High hospital volume is associated with an increased likelihood that colectomy will be performed with laparoscopy.

DOI of Published Version



Surg Endosc. 2010 Mar;24(3):662-9. Epub 2009 Aug 18. Link to article on publisher's site

Journal/Book/Conference Title

Surgical endoscopy


Medical student Anand Singla participated in this study as part of his Senior Scholars research project.

Related Resources

Link to Article in PubMed

PubMed ID