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Review of studies evaluating psychotherapy in bulimia nervosa: The influence of research methods



    Corresponding author
    1. Department of Psychology, Aarhus University, Denmark and Eating Disorder Centre, Aarhus University Hospital, Denmark
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L. Clausen, Aarhus University, Department of Psychology, Asylvej 4, 8240 Risskov, Denmark. E-mail:


The purpose of the study was to test if design and research methods of studies predict outcome results of bulimia nervosa. Fifty-seven articles on outcome of bulimia nervosa were found through MEDLINE and PSYCHINFO databases and 25 were included in the statistical analysis. Percentages of patients with a good outcome ranged from 24% to 74% with a mean of 51.1%. The variables best predicting outcome were time to follow-up and number of symptoms evaluated in definition of good outcome whereas dropout, design of studies, treatments, and sample characteristics did not predict significantly. The implications of these findings are discussed.