The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.
Hospital Volume and Operative Mortality in the Modern Era
Open accessAbstract
OBJECTIVE: To determine whether the relationship between hospital volume and mortality has changed over time. BACKGROUND: It is generally accepted that hospital volume is associated with mortality in high-risk procedures. However, as surgical safety has improved over the last decade, recent evidence has suggested that the inverse relationship has diminished or been eliminated. METHODS: Using national Medicare claims data from 2000 through 2009, we examined mortality among 3,282,127 patients who underwent 1 of 8 gastrointestinal, cardiac, or vascular procedures. Hospitals were stratified into quintiles of operative volume. Using multivariable logistic regression models to adjust for patient characteristics, we examined the relationship between hospital volume and mortality, and assessed for changes over time. We performed sensitivity analyses using hierarchical logistic regression modeling with hospital-level random effects to confirm our results. RESULTS: Throughout the 10-year period, a significant inverse relationship was observed in all procedures. In 5 of the 8 procedures studied, the strength of the volume-outcome relationship increased over time. In esophagectomy, for example, the adjusted odds ratio of mortality in very low volume hospitals compared to very high volume hospitals increased from 2.25 [95% confidence interval (CI): 1.57-3.23] in 2000-2001 to 3.68 (95% CI: 2.66-5.11) in 2008-2009. Only pancreatectomy showed a notable decrease in strength of the relationship over time, from 5.83 (95% CI: 3.64-9.36) in 2000-2001, to 3.08 (95% CI: 2.07-4.57) in 2008-2009. CONCLUSIONS: For all procedures examined, higher volume hospitals had significantly lower mortality rates than lower volume hospitals. Despite recent improvements in surgical safety, the strong inverse relationship between hospital volume and mortality persists in the modern era.
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Comorbidity measures for use with administrative data.
Elixhauser, A., Steiner, C., Harris, D. R., & Coffey, R. M. (1998) · Medical Care · doi:10.1097/00005650-199801000-00004 · Cited by 9,921
A surgical safety checklist to reduce morbidity and mortality in a global population
Haynes, A. B., Weiser, T. G., Berry, W. R., Lipsitz, S. R., Breizat, A.-H. S., Dellinger, E. P., Herbosa, T., Joseph, S., Kibatala, P. L., Lapitan, M. C. M., et al. (2009) · New England Journal of Medicine · doi:10.1056/nejmsa0810119 · Cited by 5,688
Hospital Volume and Surgical Mortality in the United States
Birkmeyer, J. D., Siewers, A. E., Finlayson, E. V. A., Stukel, T. A., Lucas, F. L., Batista, I., Welch, H. G., & Wennberg, D. E. (2002) · New England Journal of Medicine · doi:10.1056/nejmsa012337 · Cited by 4,999
Self-citationNeighborhood of residence and incidence of coronary heart disease
Roux, A. V. D., Merkin, S. S., Arnett, D., Chambless, L., Massing, M., Nieto, F. J., Sorlie, P., Szklo, M., Tyroler, H. A., & Watson, R. L. (2001) · New England Journal of Medicine · doi:10.1056/nejm200107123450205 · Cited by 1,799
Halm, E. A., Lee, C., & Chassin, M. R. (2002) · Annals of Internal Medicine · doi:10.7326/0003-4819-137-6-200209170-00012 · Cited by 1,704
Impact of Hospital Volume on Operative Mortality for Major Cancer Surgery
Begg, C. B. (1998) · JAMA · doi:10.1001/jama.280.20.1747 · Cited by 1,657
Trends in Hospital Volume and Operative Mortality for High-Risk Surgery
Finks, J. F., Osborne, N. H., & Birkmeyer, J. D. (2011) · New England Journal of Medicine · doi:10.1056/nejmsa1010705 · Cited by 1,355
Self-citationPublic Reporting and Pay for Performance in Hospital Quality Improvement
Lindenauer, P. K., Remus, D., Roman, S., Rothberg, M. B., Benjamin, E. M., Ma, A., & Bratzler, D. W. (2007) · New England Journal of Medicine · doi:10.1056/nejmsa064964 · Cited by 854
O'Connor, G. T. (1996) · JAMA: The Journal of the American Medical Association · doi:10.1001/jama.1996.03530350023029 · Cited by 726
The accuracy of Medicare's hospital claims data: progress has been made, but problems remain.
Fisher, E. S., Whaley, F. S., Krushat, W. M., Malenka, D. J., Fleming, C., Baron, J. A., & Hsia, D. C. (1992) · American Journal of Public Health · doi:10.2105/ajph.82.2.243 · Cited by 709
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Minnella, E. M., Awasthi, R., Loiselle, S.-E., Agnihotram, R. V., Ferri, L. E., & Carli, F. (2018) · JAMA Surgery · doi:10.1001/jamasurg.2018.1645 · Cited by 522
European evidence based consensus on surgery for ulcerative colitis
Øresland, T., Bemelman, W. A., Sampietro, G. M., Spinelli, A., Windsor, A., Ferrante, M., Marteau, P., Zmora, O., Kotze, P. G., Espin-Basany, E., et al. (2015) · Journal of Crohn's and Colitis · doi:10.1016/j.crohns.2014.08.012 · Cited by 353
Toward a Consensus on Centralization in Surgery
Vonlanthen, R., Lodge, P., Barkun, J. S., Farges, O., Rogiers, X., Soreide, K., Kehlet, H., Reynolds, J. V., Käser, S. A., Naredi, P., et al. (2018) · Annals of Surgery · doi:10.1097/sla.0000000000002965 · Cited by 274
Self-citationOgola, G. O., Haider, A., & Shafi, S. (2017) · Journal of Trauma and Acute Care Surgery · doi:10.1097/ta.0000000000001355 · Cited by 61
Metadata
- Authors
- Reames, B. N., Ghaferi, A. A., Birkmeyer, J. D., & Dimick, J. B.
- Venue
- Annals of Surgery
- Published
- 2014-08
- Volume
- 260
- Issue
- 2
- Pages
- 244-251
- ISSN
- 0003-4932 (ISSN-L)
- OpenAlex
- W2317899051
- Cited by
- 445
- References
- 30
- FWCI
- 50.01
- Type
- journal article
- Language
- en
- Open access
- green
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