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
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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Cites
Krupp, L. B. (1989) · Archives of Neurology · doi:10.1001/archneur.1989.00520460115022 · Cited by 6,172
Symptomatic fatigue in multiple sclerosis.
Freal, J. E., Kraft, G. H., & Coryell, J. K. (1984) · PubMed · Cited by 526
Measuring quality of life in clinical trials: a taxonomy and review.
Guyatt, G. H., van Zanten, S. J. V., Feeny, D. H., & Patrick, D. L. (1989) · Europe PMC (PubMed Central) · Cited by 408
Chronic Fatigue in Primary Care: Prevalence, Patient Characteristics, and Outcome
Kroenke, K. (1988) · JAMA · doi:10.1001/jama.1988.03410070057028 · Cited by 313
Amantadine Therapy for Fatigue in Multiple Sclerosis
Murray, T. J. (1985) · Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques · doi:10.1017/s0317167100047107 · Cited by 212
A Randomized Controlled Trial of Amantadine in Fatigue Associated With Multiple Sclerosis
The Canadian MS Research Group (1987) · Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques · doi:10.1017/s0317167100026603 · Cited by 150
Measuring overall health: An evaluation of three important approaches
Read, J. L., Quinn, R., & Hoefer, M. A. (1987) · Journal of Chronic Diseases · doi:10.1016/s0021-9681(87)80027-9 · Cited by 134
Ray, C., Weir, W. R. C., Phillips, S. M., & Cullen, S. (1992) · Psychology and Health · doi:10.1080/08870449208404293 · Cited by 92
Klonoff, D. C. (1992) · Clinical Infectious Diseases · doi:10.1093/clind/15.5.812 · Cited by 69
Experiencing symptoms in chronic illness: fatigue in multiple sclerosis
Monks, J. (1989) · International Disability Studies · doi:10.3109/03790798909166394 · Cited by 65
Cited by
Yellen, S. B., Cella, D. F., Webster, K., Blendowski, C., & Kaplan, E. (1997) · Journal of Pain and Symptom Management · doi:10.1016/s0885-3924(96)00274-6 · Cited by 1,964
Distinguishing sleepiness and fatigue: focus on definition and measurement
Shen, J., Barbera, J., & Shapiro, C. M. (2006) · Sleep Medicine Reviews · doi:10.1016/j.smrv.2005.05.004 · Cited by 687
Validation of the Hospital anxiety and depression scale for use with multiple sclerosis patients
Honarmand, K., & Feinstein, A. (2009) · Multiple Sclerosis Journal · doi:10.1177/1352458509347150 · Cited by 436
Physical Activity Improves Symptoms in Irritable Bowel Syndrome: A Randomized Controlled Trial
Johannesson, E., Simrén, M., Strid, H., Bajor, A., & Sadik, R. (2011) · American Journal of Gastroenterology · doi:10.1038/ajg.2010.480 · Cited by 431
Evaluation of the modified fatigue impact scale in four different European countries
Kos, D., Kerckhofs, E., Carrea, I., Verza, R., Ramos, M., & Jansa, J. (2005) · Multiple Sclerosis Journal · doi:10.1191/1352458505ms1117oa · Cited by 381
Metadata
- Authors
- Fisk, J. D., Ritvo, P. G., Ross, L., Haase, D. A., Marrie, T. J., & Schlech, W. F.
- Venue
- Clinical Infectious Diseases
- Publisher
- Oxford University Press (OUP)
- 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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- 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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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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