Abstract
The recently introduced Cancer Communication Assessment Tool (CCAT-PF) measures congruence in patient-caregiver communication and was initially validated in lung cancer patients. Contributing to a greater proportion of the variance in the conflict scores, primary caregivers were hypothesized to experience greater stress. For a detailed understanding of conflicting communication patterns of cancer-affected families, our study aimed for psychometric validation of the CCAT-PF in a sample covering heterogeneous tumor entities. Subsequent to a cross-sectional survey of 189 pairs of cancer patients (31% gastrointestinal, 34% lung, and 35% urological) and their caregivers' exploratory factor analysis with principal component condensation and varimax rotation was conducted (response rate, 74.2%). Reliability and construct validity were assessed calculating Cronbach's α and Pearson correlation coefficients for CCAT-P and CCAT-F scales and related constructs, respectively. Cancer-related communication according to the CCAT-PF can be subdivided into four factors including the scales Disclosure, Limitation of treatment, Family involvement in treatment decisions, and Continuing treatment. Reliability ranged from α = .51-.68. The Disclosure scale, describing poor cancer-related communication of the patient, was correlated with patient's distress (QSC-R10: r = .30, p < .0001), unmet needs in several areas (SCNS-SF-34: r = .25-.32, p < .001), and negatively with social/family well-being (FACT: r = -0.31, p < .0001). Higher scores on the scale were significantly associated with considerable decrements in emotional well-being especially for caregivers perceiving patients' disclosure as problematic. The Disclosure scale originating from the CCAT-PF emerged as a short, valid, and reliable stand-alone instrument for identifying conflicting communication in patient-caregiver-dyads at risk.
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