Development of a Scale to Assess Knowledge about Suicide Postvention using Item Response Theory |
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| Authors: | Ingo W. Nader MSc MEng Thomas Niederkrotenthaler MD PhD MMSc Anne H. E. Schild MSc Ingrid Koller PhD Ulrich S. Tran DSc MSc Nestor D. Kapusta MD PhD Gernot Sonneck MD Martin Voracek DSc DMSc PhD |
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| Affiliation: | 1. Department of Basic Psychological Research and Research Methods, School of Psychology, University of Vienna, , Vienna, Austria;2. Department of General Practice and Family Medicine, Center for Public Health, Medical University of Vienna, , Vienna, Austria;3. Department of Medical Psychology, Center for Public Health, Medical University of Vienna, , Vienna, Austria;4. Department of Psychoanalysis and Psychotherapy, Medical University of Vienna, , Vienna, Austria;5. Crisis Intervention Center and Ludwig Boltzmann Institute for Social Psychiatry, , Vienna, Austria |
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| Abstract: | Knowledge about suicide postvention (KSPV) is an important distal outcome in the evaluation of suicide prevention programs that focus on the bereaved. However, most scales are specifically tailored to the evaluation study in question and psychometric properties are often unsatisfactory. Therefore, we developed the KSPV scale. Scale properties were investigated with Rasch trees, a newly developed method in the framework of item response theory. Additionally, we provide cues for convergent validity. In summary, the scale shows satisfactory properties for assessing KSPV and could be used to evaluate suicide postvention programs more effectively. |
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