Item response theory analysis and properties of decisional conflict scales: findings from two multi-site trials of men with localized prostate cancer.

ABSTRACT: BACKGROUND:Decisional conflict is associated with decision quality and may affect decision outcomes. In the health sciences literature, the Decisional Conflict Scale is widely used to measure decisional conflict, yet limited research has described the psychometric properties of the Decisional Conflict Scale subscales and of the low literacy version of the scale. The purpose of this secondary data analysis was therefore to examine properties of the original (DCS-12) and low literacy (LL DCS-10) Decisional Conflict Scales using Classical Measurement Theory and Item Response Theory. METHODS:Data from two multi-site trials of men with prostate cancer were used to analyze the DCS-12, LL DCS-10, and an aggregated DCS-12 dataset in which five response options were aggregated into three. Internal

SUBMITTER: Pozzar RA 

PROVIDER: S-EPMC6610903 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature