title: Development of a scale to assess knowledge about suicide postvention using item response theory.
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.
authors.affiliation: Department of Basic Psychological Research and Research Methods, School of Psychology, University of Vienna, Vienna, Austria. ingo.nader@univie.ac.at
authors.forename: Ingo W
authors.initials: IW
authors.lastname: Nader
authors.forename: Thomas
authors.initials: T
authors.lastname: Niederkrotenthaler
authors.forename: Anne H E
authors.initials: AH
authors.lastname: Schild
authors.forename: Ingrid
authors.initials: I
authors.lastname: Koller
authors.forename: Ulrich S
authors.initials: US
authors.lastname: Tran
authors.forename: Nestor D
authors.initials: ND
authors.lastname: Kapusta
authors.forename: Gernot
authors.initials: G
authors.lastname: Sonneck
authors.forename: Martin
authors.initials: M
authors.lastname: Voracek
mesh_terms: D000328:Adult; D001317:Austria; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D011582:Psychological Theory; D011594:Psychometrics; D011795:Surveys and Questionnaires; D055815:Young Adult; D000092864:Suicide Prevention