Development and psychometric properties of the Suicidality of Adolescent Screening Scale (SASS) using Multidimensional Item Response Theory

Supattra Sukhawaha, Suwanna Arunpongpaisal, Cameron Hurst

Research output: Contribution to journalArticlepeer-review

Abstract

Suicide prevention in adolescents by early detection using screening tools to identify high suicidal risk is a priority. Our objective was to build a multidimensional scale namely “Suicidality of Adolescent Screening Scale (SASS)” to identify adolescents at risk of suicide. An initial pool of items was developed by using in-depth interview, focus groups and a literature review. Initially, 77 items were administered to 307 adolescents and analyzed using the exploratory Multidimensional Item Response Theory (MIRT) to remove unnecessary items. A subsequent exploratory factor analysis revealed 35 items that collected into 4 factors: Stressors, Pessimism, Suicidality and Depression. To confirm this structure, a new sample of 450 adolescents were collected and confirmatory MIRT factor analysis was performed. The resulting scale was shown to be both construct valid and able to discriminate well between adolescents that had, and hadn't previous attempted suicide.

Original languageEnglish
Pages (from-to)431-438
Number of pages8
JournalPsychiatry Research
Volume243
DOIs
Publication statusPublished - 30 Sep 2016
Externally publishedYes

Fingerprint

Dive into the research topics of 'Development and psychometric properties of the Suicidality of Adolescent Screening Scale (SASS) using Multidimensional Item Response Theory'. Together they form a unique fingerprint.

Cite this