title: Study design in valve surgery and outcome.
authors.forename: Jeffrey H
authors.initials: JH
authors.lastname: Shuhaiber
authors.forename: Malek
authors.initials: M
authors.lastname: Massad
authors.forename: Alexander
authors.initials: A
authors.lastname: Geha
mesh_terms: D001705:Bioprosthesis; D005260:Female; D006349:Heart Valve Diseases / Q000601:surgery; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000592:standards* / Q000639:trends; D006801:Humans; D016015:Logistic Models; D008297:Male; D011183:Postoperative Complications / Q000453:epidemiology; D011475:Prosthesis Failure; D012107:Research Design; D018570:Risk Assessment; D016896:Treatment Outcome