17 18 19 20 For hip fracture surgery, two meta-analyses of 15 and 22 randomized clinical trials comparing regional with general anesthesia found borderline significant results of a reduced short term risk of mortality associated with regional anesthesia, but no evidence of a decreased risk at three months post-surgery or beyond 10 21 ; all included studies had important methodological flaws.
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Comparative safety of anesthetic type for hip fracture surgery in adults: retrospective cohort study.
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