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Abstract
This investigation evaluates two common measures of cancer-related fatigue, one multidimensional/retrospective and one unidimensional/same day. Fifty-two African American survivors of diverse cancers completed fatigue visual analogue scales once daily, and the Multidimensional Fatigue Symptom Inventory-Short Form (MFSI-SF) once weekly, for four weeks. Zero-order correlations showed retrospective fatigue was significantly related to average, peak, and most recent same-day fatigue. Multilevel random coefficient modeling showed unidimensional fatigue shared the most variance with the MFSI-SF's General subscale for three weeks, and with the Vigor subscale for one week. Researchers and clinicians may wish to prioritize multidimensional measures when assessing cancer-related fatigue, if appropriate.
Acknowledgments
This study was funded by the National Institutes of Health grants: R25CA65745; P30 CA023100; U56CA92079/U56CA92081; U54CA132379/U54CA132384; and the National Institues of Health/National Center on Minority Health and Health Disparities University of California, San Diego Comprehensive Research Center in Health Disparities (P60 MD000220). The authors declare that they have no conflict of interest.