title: The use of Z scores in assessing neuropsychological change after cardiac operations.
authors.forename: Donald
authors.initials: D
authors.lastname: Whitaker
mesh_terms: D001925:Brain Damage, Chronic / Q000175:diagnosis*; D003072:Cognition Disorders / Q000175:diagnosis*; D006331:Heart Diseases / Q000601:surgery*; D006801:Humans; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D011183:Postoperative Complications / Q000175:diagnosis*; D011594:Psychometrics; D015203:Reproducibility of Results