The power of statistical studies in consultation-liaison psychiatry.
Several authors recently have proclaimed the need for empirically based research articles in consultation-liaison psychiatry. The authors report that although the proportion of empirically based studies published in Psychosomatics increased 148% from 1979 to 1989, the power of statistical analyses and the deleterious effect of multiple tests were often neglected. A power analysis of empirical studies published in the 1989 volume year of Psychosomatics is reported, showing statistical power to be low for all but the most robust of effect sizes.
Brown
J
J
Department of Psychiatry, University of Connecticut School of Medicine, Farmington.
Hale
M S
MS
D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000523:psychology; D015233:Models, Statistical; D011570:Psychiatry; D012017:Referral and Consultation / Q000706:statistics & numerical data*