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Development of a Scale to Assess Knowledge about Suicide Postvention using Item Response Theory
Author(s) -
Nader Ingo W.,
Niederkrotenthaler Thomas,
Schild Anne H. E.,
Koller Ingrid,
Tran Ulrich S.,
Kapusta Nestor D.,
Sonneck Gernot,
Voracek Martin
Publication year - 2013
Publication title -
suicide and life‐threatening behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.544
H-Index - 90
eISSN - 1943-278X
pISSN - 0363-0234
DOI - 10.1111/sltb.12006
Subject(s) - scale (ratio) , item response theory , psychology , clinical psychology , applied psychology , psychometrics , physics , quantum mechanics
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 R asch 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.