Cancer is a prevalent disease worldwide. According to a report by the Organization for Economic Cooperation and Development (2021), the average incidence rate of cancer is 294 per 100,000 population, and cancer is the second most common cause of death in Organization for Economic Cooperation and Development member countries. The incidence rate in Korea is also high at 243 per 100,000, with cancer ranking as the most prominent cause of death in the country (27.0%; Statistics Korea, 2021).Fatigue is one of the most commonly occurring subjective symptom in patients with cancer (Berger et al., 2020) and may be associated with either the cancer itself or related treatments and often does not improve with rest (Cella et al., 2002). Severe fatigue has been shown to impair physical function, reduce quality of life, delay treatment, and increase mortality (Mai et al., 2019). Thus, accurate and efficient fatigue assessment is essential for the successful completion of cancer treatment and improvement of survival rates in patients with cancer.Fatigue in patients with cancer is often assessed using selfreport questionnaires that employ either a unidimensional scale or a multidimensional scale. Examples of questionnaires featuring unidimensional scales include the Profile of Mood States Fatigue (McNair et al., 1992), the Brief Fatigue Inventory (Mendoza et al., 1999), and the Fatigue Severity Scale (Krupp et al., 1989). Examples of widely used multidimensional scales include the Piper Fatigue Scale (Piper et al., 1989), the Multidimensional Fatigue Symptom Inventory (Stein et al., 2004), and the Multidimensional Fatigue Inventory-20 (Smets et al., 1995). Unidimensional fatigue scales measure fatigue severity only and, as a result of their brevity, are well suited to clinical settings (Aghdam et al., 2019