The MFSI-SF demonstrated moderate test-retest reliability in a small number of studies .
The MFSI-SF fatigue subscales were positively correlated with measures of distress , depressive , and anxious symptoms .
Purpose Fatigue is a subjective complaint that is believed to be multifactorial in its etiology and multidimensional in its expression .
Fatigue may be experienced by individuals in different dimensions as physical , mental , and emotional tiredness .
The purpose s of this study were to review and characterize the use of the 30-item Multidimensional Fatigue Symptom Inventory-Short Form ( MFSI-SF ) in published studies and to evaluate the available evidence for its psychometric properties .
The relationship between fatigue and light exposure during chemotherapy
Background Fatigue is one of the most common and distressing complaints among cancer patients , not only during radiation and chemotherapy , but also for months to years after the completion of treatment . Fatigue interferes with patients ’ daily lives , reduces their quality of life , and is often a significant reason why patients discontinue treatment . We hypothesized that some of the fatigue may be related to disrupted circadian rhythms and low light exposure . The main objective of this study therefore was to investigate the association between fatigue and light exposure among patients with breast cancer . Methods As part of a larger , ongoing prospect i ve study on fatigue , sleep , and circadian rhythms in patients with breast cancer , an analysis of 63 women newly diagnosed with stage I – IIIA breast cancer and scheduled to receive four cycles of adjuvant or neoadjuvant anthracycline-based chemotherapy  was conducted . Data were collected before and during weeks 1 , 2 , and 3 of cycle 1 and cycle 4 . Fatigue was assessed using the Short Form of Multidimensional Fatigue Symptom Inventory . Light exposure was recorded with a wrist actigraph . Results There were significant correlations between fatigue levels and light exposure ( r=−0.28 to −0.45 ) within both cycle 1 and cycle 4 , such that higher levels of fatigue were associated with less light exposure . There were also significant correlations between changes in light exposure and changes in fatigue within the first 2 weeks of each cycle ( r=−0.28 to −0.52 ) . Conclusions Increased fatigue was significantly correlated with decreased light exposure among patients with breast cancer . Although the cause and effect of exacerbated fatigue and decreased light exposure can not be confirmed by the current study , and lower light exposure may just in part be due to the fatigued patients spending less time outdoors in bright light , two hypotheses are proposed about the mechanisms by which light may alleviate the fatigue of patients with breast cancer . These results suggest the need for prospect i ve intervention studies of light therapy for breast-cancer-related fatigue
The MFSI-SF demonstrated moderate test-retest reliability in a small number of studies .
The MFSI-SF fatigue subscales were positively correlated with measures of distress , depressive , and anxious symptoms .
Purpose Fatigue is a subjective complaint that is believed to be multifactorial in its etiology and multidimensional in its expression .
Fatigue may be experienced by individuals in different dimensions as physical , mental , and emotional tiredness .
The purpose s of this study were to review and characterize the use of the 30-item Multidimensional Fatigue Symptom Inventory-Short Form ( MFSI-SF ) in published studies and to evaluate the available evidence for its psychometric properties .