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Factors determining fatigue in the chronic fatigue syndrome : a path analysis

Els Tobback (UGent) , Ignace Hanoulle, An Mariman (UGent) , Liesbeth Delesie (UGent) , Dirk Pevernagie (UGent) and Dirk Vogelaers (UGent)
(2016) ACTA CLINICA BELGICA. 71(5). p.284-289
Author
Organization
Abstract
Objectives: To explore the interrelationship of different dimensions (fatigue, neuroticism, sleep quality, global mental and physical health) in patients with chronic fatigue syndrome (CFS). Methods: Patients meeting the Fukuda criteria of CFS filled out two independent fatigue scales (Fatigue Questionnaire, FQ and Checklist Individual Strength, CIS), NEO-Five Factor Inventory (NEO-FFI), Pittsburgh Sleep Quality Index (PSQI) and Medical Outcomes Study 36-item Short Form Health Survey (SF36). Exploratory and confirmatory path analyses were performed. Results: Out of 226 eligible patients, 167 subjects were included (mean age 39.13years, SD 10.14, 92% female). In a first exploratory path analysis, using FQ for assessment of fatigue, night-time PSQI sleep quality had a direct effect on SF36 physical quality of life (PQoL) and no effect on FQ fatigue. This was confirmed by a subsequent path analysis with CIS fatigue and by confirmatory path analyses in 81 patients. These unexpected results raised the question whether FQ or CIS fatigue sufficiently operationalizes fatigue in CFS patients. Conclusions: Poor sleep quality seems to directly impact on mental quality of life (MQoL) and PQoL without mediation of fatigue assessed with FQ and CIS. A more cohesive framework needs to be developed with more comprehensive clinical tools for the different dimensions in the construct of CFS.
Keywords
Chronic fatigue syndrome, FQ, CIS, PSQI, SF36, SLEEP QUALITY INDEX, PERSONALITY-DISORDER, PERFECTIONISM, DIMENSIONS, SAMPLE, SCALE, SF-36

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MLA
Tobback, Els, Ignace Hanoulle, An Mariman, et al. “Factors Determining Fatigue in the Chronic Fatigue Syndrome : a Path Analysis.” ACTA CLINICA BELGICA 71.5 (2016): 284–289. Print.
APA
Tobback, E., Hanoulle, I., Mariman, A., Delesie, L., Pevernagie, D., & Vogelaers, D. (2016). Factors determining fatigue in the chronic fatigue syndrome : a path analysis. ACTA CLINICA BELGICA, 71(5), 284–289.
Chicago author-date
Tobback, Els, Ignace Hanoulle, An Mariman, Liesbeth Delesie, Dirk Pevernagie, and Dirk Vogelaers. 2016. “Factors Determining Fatigue in the Chronic Fatigue Syndrome : a Path Analysis.” Acta Clinica Belgica 71 (5): 284–289.
Chicago author-date (all authors)
Tobback, Els, Ignace Hanoulle, An Mariman, Liesbeth Delesie, Dirk Pevernagie, and Dirk Vogelaers. 2016. “Factors Determining Fatigue in the Chronic Fatigue Syndrome : a Path Analysis.” Acta Clinica Belgica 71 (5): 284–289.
Vancouver
1.
Tobback E, Hanoulle I, Mariman A, Delesie L, Pevernagie D, Vogelaers D. Factors determining fatigue in the chronic fatigue syndrome : a path analysis. ACTA CLINICA BELGICA. 2016;71(5):284–9.
IEEE
[1]
E. Tobback, I. Hanoulle, A. Mariman, L. Delesie, D. Pevernagie, and D. Vogelaers, “Factors determining fatigue in the chronic fatigue syndrome : a path analysis,” ACTA CLINICA BELGICA, vol. 71, no. 5, pp. 284–289, 2016.
@article{7205892,
  abstract     = {Objectives: To explore the interrelationship of different dimensions (fatigue, neuroticism, sleep quality, global mental and physical health) in patients with chronic fatigue syndrome (CFS).
Methods: Patients meeting the Fukuda criteria of CFS filled out two independent fatigue scales (Fatigue Questionnaire, FQ and Checklist Individual Strength, CIS), NEO-Five Factor Inventory (NEO-FFI), Pittsburgh Sleep Quality Index (PSQI) and Medical Outcomes Study 36-item Short Form Health Survey (SF36). Exploratory and confirmatory path analyses were performed.
Results: Out of 226 eligible patients, 167 subjects were included (mean age 39.13years, SD 10.14, 92% female). In a first exploratory path analysis, using FQ for assessment of fatigue, night-time PSQI sleep quality had a direct effect on SF36 physical quality of life (PQoL) and no effect on FQ fatigue. This was confirmed by a subsequent path analysis with CIS fatigue and by confirmatory path analyses in 81 patients. These unexpected results raised the question whether FQ or CIS fatigue sufficiently operationalizes fatigue in CFS patients.
Conclusions: Poor sleep quality seems to directly impact on mental quality of life (MQoL) and PQoL without mediation of fatigue assessed with FQ and CIS. A more cohesive framework needs to be developed with more comprehensive clinical tools for the different dimensions in the construct of CFS.},
  author       = {Tobback, Els and Hanoulle, Ignace and Mariman, An and Delesie, Liesbeth and Pevernagie, Dirk and Vogelaers, Dirk},
  issn         = {1784-3286},
  journal      = {ACTA CLINICA BELGICA},
  keywords     = {Chronic fatigue syndrome,FQ,CIS,PSQI,SF36,SLEEP QUALITY INDEX,PERSONALITY-DISORDER,PERFECTIONISM,DIMENSIONS,SAMPLE,SCALE,SF-36},
  language     = {eng},
  number       = {5},
  pages        = {284--289},
  title        = {Factors determining fatigue in the chronic fatigue syndrome : a path analysis},
  url          = {http://dx.doi.org/10.1080/17843286.2016.1165396},
  volume       = {71},
  year         = {2016},
}

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