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The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.

Measuring the Functional Impact of Fatigue: Initial Validation of the Fatigue Impact Scale

Fisk, John D., Ritvo, Paul G., Ross, Lynn, Haase, David A., Marrie, Thomas J., Schlech, Walter F.·1994·Clinical Infectious Diseases

Abstract

The fatigue impact scale (FIS) was developed to improve our understanding of the effects of fatigue on quality of life. The FIS examines patients' perceptions of the functional limitations that fatigue has caused over the past month. FIS items reflect perceived impact on cognitive, physical, and psychosocial functioning. This study compared 145 patients referred for investigation of chronic fatigue (ChF) with 105 patients with multiple sclerosis (MS) and 34 patients with mild hypertension (HT). Internal consistency for the FIS and its three subscales was > .87 for all analyses. Fatigue impact was highest for the ChF group although the MS group's reported fatigue also exceeded that of the HT group. Discriminant function analysis correctly classified 80.0% of the ChF group and 78.1% of the MS group when these groups were compared. This initial validation study indicates that the FIS has considerable merit as a measure of patient's attribution of functional limitations to symptoms of fatigue.

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Metadata

Authors
Fisk, J. D., Ritvo, P. G., Ross, L., Haase, D. A., Marrie, T. J., & Schlech, W. F.
Venue
Clinical Infectious Diseases
Published
1994-01-01
Volume
18
Issue
Supplement_1
Pages
S79-S83
ISSN
  • 1058-4838 (ISSN-L)
  • 1537-6591
OpenAlex
W2108230902
Cited by
1,541
References
10
FWCI
2.03
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Measuring the Functional Impact of Fatigue: Initial Validation of the Fatigue Impact Scale. https://app.cochat.ai/papers/10.1093/clinids/18.supplement_1.s79
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Fisk, J. D., Ritvo, P. G., Ross, L., Haase, D. A., Marrie, T. J., & Schlech, W. F. (1994). Measuring the Functional Impact of Fatigue: Initial Validation of the Fatigue Impact Scale. Clinical Infectious Diseases. https://doi.org/10.1093/clinids/18.supplement_1.s79

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