Abstract
This comprehensive review assessed the psychometric properties of abbreviated versions of the Caregiver Burden Instrument (ZBI-22). Initially, 40 articles that met the inclusion criteria were identified through a systematic search of four databases. Additionally, 26 articles were included through manual searches, totaling 66 articles in the analysis. Different versions of instruments measuring caregiver burden were examined, considering item variability and differences in factor structures. Although most measures exhibited satisfactory content validity, as well as construct validity supported by high internal consistencies, it is important to note that measurement invariance, criterion validity and test-retest reliability were not established for all measures analyzed. Furthermore, structural validity was not satisfactory for all versions. Research and clinical practice could benefit from a standardized approach that allows for a more accurate and consistent assessment of caregiver strain.
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