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Background: The reliability and validity of the subjective component of the Dutch Objective Burden Inventory (DOBI) are unknown. Objective: The validity and reliability of the subjective component of the DOBI were examined in caregivers of individuals with heart failure, using the original 38- and a 24-item version. Methods: In an online cross-sectional investigation, confirmatory factor analysis was used to examine factorial validity. In examining convergent validity, corrected item-dimension correlations assessed item performance and associations between subjective subscale scores and the Bakas Caregiving Outcomes Scale. Cronbach's α examined internal consistency. Results: The original 4-factor solution was retained and both the original and shorter versions of the subjective component of the DOBI supported adequate construct validity and internal consistency. Conclusions: Both the 38- and 24-item forms of the subjective DOBI supported construct validity and reliability. Further studies examining the usefulness of both versions are needed in carers of individuals with more severe HF. [ABSTRACT FROM AUTHOR]

Background: Psychometric properties of the 38-item version of the Dutch Objective Burden Inventory (DOBI) have been evaluated primarily in older female caregivers, with no published studies that vary by a different gender and age distribution. Objective: The aimof this study was to test the construct validity and reliability of the DOBI in caregivers of individuals with heart failure from the United States and other countries. Methods: This secondary analysis from a cross-sectional study used an online survey. Factorial validity was tested with confirmatory factor analysis, item performance was examined with ordinal item response analysis, and convergent validity was tested correlating DOBI subscale scores with Bakas Caregiving Outcomes Scale scores. Internal consistency reliability was assessed with Cronbach α. Results: Item response analysis removed 14 items. Confirmatory factor analysis retained the original 4-factor solution. Original and reduced instruments demonstrated good internal consistency. Validity was supported by meaningful associations with the Bakas Caregiving Outcomes Scale. Conclusions: Both the original 38-item DOBI and the reduced 24-item DOBI had support for their construct validity and internal consistency. The 24-item DOBI may be a useful alternative to the 38-item version, because it maintains psychometric properties of the original instrument while decreasing data collection burden. However, more research is needed to assess whether the shorter version is useful in assessing objective caregiving burden. [ABSTRACT FROM AUTHOR]