Effect of Crossover on the Statistical Power of Randomized Studies

Randomized studies involving long-term follow-up are vulnerable to the effects of unplanned crossover. In surgical studies, such crossover usually occurs when control patients become more symptomatic and undergo operation. In several large studies of coronary bypass grafting, crossover ranged from 2...

Full description

Saved in:

Bibliographic Details
Published in:	The Annals of thoracic surgery Vol. 48; no. 4; pp. 490 - 495
Main Authors:	Weinstein, Gerald S., Levin, Bruce
Format:	Journal Article
Language:	English
Published:	New York, NY Elsevier Inc 01-10-1989 Elsevier Science
Subjects:	Biological and medical sciences Coronary Artery Bypass - statistics & numerical data Data Interpretation, Statistical Humans Medical sciences Randomized Controlled Trials as Topic - methods Research Design Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Surgery of the heart Human Randomization Aortocoronary Bypass Surgery Cardiovascular disease Epidemiology Statistical study
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Be the first to leave a comment!