Psychometric properties of the Brief Symptom Inventory-18 in a heterogeneous sample of adult cancer patients

Abstract The Brief Symptom Inventory-18 (BSI-18) is a self-reporting screening instrument that is widely used to assess global psychological distress and three kinds of symptoms: anxiety, depression, and somatization. The present study tests the factor structure of the BSI-18 using confirmatory fact...

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Published inRevista latinoamericana de psicología Vol. 51; no. 1; pp. 1 - 8
Main Authors Martínez López, Paula, Conchado Peiró, Andrea, Andreu Vaillo, Yolanda, Galdón Garrido, María José
Format Journal Article
LanguageEnglish
Published Fundación Universitaria Konrad Lorenz 01.01.2019
Subjects
assessment
Brief Symptom Inventory
cancer
cáncer
distrés emocional
emotional distress
evaluación
propiedades psicométricas
PSYCHOLOGY, MULTIDISCIPLINARY
psychometric properties
assessment
cáncer
Brief Symptom Inventory-18
propiedades psicométricas
emotional distress
cancer
psychometric properties
distrés emocional
evaluación
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Summary:Abstract The Brief Symptom Inventory-18 (BSI-18) is a self-reporting screening instrument that is widely used to assess global psychological distress and three kinds of symptoms: anxiety, depression, and somatization. The present study tests the factor structure of the BSI-18 using confirmatory factor analysis (CFA), its reliability, convergent validity, and invariance for both sexes. A heterogeneous sample of 1183 cancer patients completed the BSI 18 and the NCCN Problem List. Hierarchical models of three and four subscales with GSI as a main factor provided an adequate and similar model fit. Nonetheless, the hierarchical three-factor model (the theoretical proposal) was selected for methodological and theoretical reasons. Reliability indexes (Cronbach's alpha and Composite Reliability) were satisfactory. The positive significant associations between BSI-18 (GSI and subscales) and emotional and physical categories of the Problem List showed the suitable convergent validity of the instrument. Finally, multigroup CFA revealed an essentially invariant structure of the BSI-18 for both sexes. The BSI-18 is a short instrument that can be used by researchers and health professionals to assess the psychological distress of cancer survivors.
ISSN:0120-0534
DOI:10.14349/rlp.2019.v51.n1.1