Using item response theory (IRT) to reduce patient burden when assessing desire for hastened death Journal Article

Authors: Kolva, E.; Rosenfeld, B.; Liu, Y.; Pessin, H.; Breitbart, W.
Article Title: Using item response theory (IRT) to reduce patient burden when assessing desire for hastened death
Abstract: Desire for hastened death (DHD) represents a wish to die sooner than might occur by natural disease progression. Efficient and accurate assessment of DHD is vital for clinicians providing care to terminally ill patients. The Schedule of Attitudes Toward Hastened Death (SAHD) is a commonly used self-report measure of DHD. The goal of this study was to use methods grounded in item response theory (IRT) to analyze the psychometric properties of the SAHD and identify an abbreviated version of the scale. Data were drawn from 4 studies of psychological distress at the end of life. Participants were 1,076 patients diagnosed with either advanced cancer or AIDS. The sample was divided into 2 subsamples for scale analysis and development of the shortened form. IRT was used to estimate item parameters. A 6-item version of the SAHD (SAHD-A) was identified through examination of item parameter estimations. The SAHD-A demonstrated adequate convergent validity. Receiver operating characteristic analyses indicated comparable cut scores to identify patients with high levels of DHD. These analyses support the utility of the SAHD-A, which can be more easily integrated into research studies and clinical assessments of DHD. (PsycINFO Database Record (c) 2017 APA, all rights reserved)
Keywords: palliative care; suicide; item response theory; desire for death; scale evaluation
Journal Title: Psychological Assessment
Volume: 29
Issue: 3
ISSN: 1040-3590
Publisher: American Psychological Association  
Date Published: 2017-03-01
Start Page: 349
End Page: 353
Language: English
ACCESSION: 2016-28483-001
DOI: 10.1037/pas0000343
PROVIDER: Ovid Technologies
PROVIDER: psycinfo
PUBMED: 27280743
PMCID: PMC5473524
Notes: References -- Source: PsycINFO
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MSK Authors
  1. William S Breitbart
    358 Breitbart
  2. Hayley Ann Pessin
    70 Pessin