This retrospective, population-based cohort study will evaluate the comparative effectiveness of peripheral nerve blocks on patient outcomes after ambulatory shoulder surgery in adults patients undergoing surgery in Ottawa, Ontario.
The investigators will use a coarsened exact matching algorithm prior to the analysis to minimize bias in this observational study. A multivariate logistic regression model will be used to compare the effect of anesthesia interventions on the primary outcome within matched cohorts. Sensitivity analyses will be used to evaluate the robustness of the primary analysis.
Study Type
OBSERVATIONAL
Enrollment
1,623
Participants who receive a peripheral nerve block identified through the medical chart.
Participants who did not receive a peripheral nerve block identified through the medical chart.
Ottawa Hospital Research Institute
Ottawa, Ontario, Canada
Postoperative Complication
Composite outcome: 1) unplanned admissions on the day of surgery, 2) post-discharge ED visits within 30 days of surgery, 3) readmission within 30 days of surgery, and 4) death from any cause.
Time frame: From day of surgery to 30 days after surgery
Health System Costs in the 30 Days After Surgery
Calculated using validated algorithms
Time frame: From day of surgery to 30 days after surgery
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