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Associations between provider and hospital volumes and postoperative mortality following total hip arthroplasty in New Brunswick: Results from a provincial-level cohort study

Author: Dan L. Crouse, Philip S.J. Leonard, Jonathan Boudreau, James T. McDonald
Year: 2018
Category: Health Publications

Read the journal article in the Canadian Journal of Surgery


Several international studies have reported negative associations between hospital and/or provider volume and risk of postoperative death following total hip arthroplasty (THA). The only Canadian studies to report on this have been based in Ontario and have found no such association. We describe associations between postoperative deaths following THA and provider caseload volume, also adjusted for hospital volume, in a population based cohort in New Brunswick.


About 7095 patients were admitted for THA in New Brunswick over the 7-year study period and 170 died within 30 days. We found no associations with provider volume and postoperative mortality in any of our models. Adjustment for contextual characteristics or hospital volume had no effects on this association.


Our results suggest that patients admitted for hip replacements in New Brunswick can expect to have similar risk of death regardless of whether they are admitted to see a provider with high or low THA volumes and of whether they are admitted to the province’s larger or smaller hospitals.

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