Physician's preference-based instrumental variable analysis: is it valid and useful in a moderate-sized study?

Anna G C Boef1, Judith van Paassen, M Sesmu Arbous

  • 1From the aDepartment of Clinical Epidemiology; bDepartment of Intensive Care; cDepartment of Medical Statistics and Bioinformatics; and dDepartment of Endocrinology and Metabolic Diseases, Leiden University Medical Centre, Leiden, The Netherlands.

Abstract

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