نبذة مختصرة : Objective Given the substantial demands of cancer caregiving, practical and psychometrically sound tools to evaluate distress among cancer caregivers are needed. CancerSupportSource TM ‐Caregiver is a distress screening, referral, and support program designed to identify the unmet needs of cancer caregivers and link caregivers to desired resources and support. This study refined and finalized the CancerSupportSource‐Caregiver screening measure and examined its psychometric properties. Methods Using an analytic sample of 400 caregivers to people with cancer, we first performed item reduction by assessing exploratory factor analysis, external/internal item quality, and judging theoretical and practical implications of items. Confirmatory factor analysis along with reliability and validity analyses were then conducted to corroborate dimensionality and psychometric properties of the final measure. Nonparametric receiver operating characteristic curve analyses determined scoring thresholds for depression and anxiety risk subscales. Results Scale refinement resulted in an 18‐item measure plus one screening item assessing tobacco and substance use. Items represented five domains of caregiver concerns: emotional well‐being, patient well‐being, caregiving tasks, finances, and healthy lifestyle. Our analyses showed strong internal consistency and test‐retest reliability, a replicable factor structure, and adequate convergent, discriminant, and known groups validity. Sensitivity of 2‐item depression and 2‐item anxiety risk subscales were 0.95 and 0.87, respectively. Conclusions CancerSupportSource‐Caregiver is a reliable and valid multidimensional measure of caregiver distress that also screens for risk for clinically significant depression and anxiety. It can be implemented within a distress screening, referral, and follow‐up program to rapidly assess caregivers' unmet needs and enhance caregiver well‐being across the care continuum.
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