Circulation Cardiovascular Interventions · 2016 · 51 citations · 26 references
An inverse volume-outcome relationship in CEA-treated patients was demonstrated. No significant association between hospital volume and the risk of stroke or death was found for CAS.
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Erik von Elm, Douglas G. Altman, Matthias Egger et al. · PLoS Medicine · 2007 · 21.1K citations · Full text
Observational Studies, Retrospective Cohort Study, Meta-analysis +15
Erik von Elm, Douglas G. Altman, Matthias Egger et al. · The Lancet · 2007 · 17.1K citations · Full text
Observational Studies, Retrospective Cohort Study, Epidemiological Outcome +9
Hospital Volume and Surgical Mortality in the United States
John D. Birkmeyer, Andrea E. Siewers, Emily Finlayson et al. · New England Journal of Medicine · 2002 · 4.9K citations
Statistics notes: Absence of evidence is not evidence of absence
John M. Bland · BMJ · 1995 · 1.8K citations · Full text
Research Ethics, Causal Inference, Acute Myocardial Infarction +16