Did you mean: Koestler, Ronald C.
  1.  25
    Some Methodological Issues in the Development of Quality of Life Measures for the Evaluation of Medical Interventions.Ronald C. Kessler & Daniel K. Mroczek - 1996 - Journal of Evaluation in Clinical Practice 2 (3):181-191.
    This paper discusses a series of important methodological issues in developing targeted health-related quality of life measures in studies of the effects of medical interventions. Such measures cannot be developed unless the evaluator understands the life domains that medical interventions affect. Qualitative discovery methods are needed to obtain this understanding. Once domains are targeted for measurement, careful and systematic laboratory pilot work should be used to select initial scale items. Psychometric evaluation of response patterns in subsequent field tests is needed (...)
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  2.  17
    Prevalence, Comorbidity, and Service Utilization for Mood Disorders in the United States at the Beginning of the Twenty-First Century.Ronald C. Kessler, Kathleen R. Merikangas & Philip S. Wang - manuscript
    The results of recent community epidemiological research are reviewed, documenting that major depressive disorder (MDD) is a highly prevalent, persistent, and often seriously impairing disorder, and that bipolar disorder (BPD) is less prevalent but more persistent and more impairing than MDD. The higher persistence and severity of BPD results in a substantial proportion of all seriously impairing depressive episodes being due to threshold or subthreshold BPD rather than to MDD. Although the percentage of people with mood disorders in treatment has (...)
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