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The operationalization of fatigue in frailty scales : a systematic review

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Abstract
Purpose: To identify the different fatigue items in existing frailty scales. Methods: PubMed, Web of Knowledge and PsycINFO were systematically screened for frailty scales. 133 articles were included, describing 158 frailty scales. Fatigue items were extracted and categorized in 4 fatigue constructs: “mood state related tiredness”, “general feeling of tiredness”, “activity based feeling of tiredness” and “resistance to physical tiredness”. Results: 120 fatigue items were identified, of which 100 belonged to the construct “general feeling of tiredness” and only 9 to the construct “resistance to physical tiredness”. 49,4% of the frailty scales included at least 1 fatigue item, representing 15±9,3% of all items in these scales. Fatigue items have a significantly higher weight in single domain (dominantly physical frailty scales) versus multi domain frailty scales (21±3.2 versus 10.6±9.8%, p=<0,05 ). Conclusion: Fatigue is prominently represented in frailty scales, covering a great diversity in fatigue constructs and underlying pathophysiological mechanisms by which fatigue relates to frailty. Although fatigue items were more prevalent and had a higher weight in physical frailty scales, the operationalization of fatigue leaned more towards psychological constructs. This review can be used as a reference for choosing a suitable frailty scale depending on the type of fatigue of interest.
Keywords
Frailty assessment, Fatigue, Tiredness, Aged, Frail elderly, HOSPITALIZED OLDER-ADULTS, ADVERSE HEALTH OUTCOMES, QUALITY-OF-LIFE, PHYSICAL-ACTIVITY, SKELETAL-MUSCLE, THERAPEUTIC INTERVENTIONS, MOBILITY DISABILITY, MAJOR DEPRESSION, ELDERLY-PEOPLE, INDEX

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MLA
Knoop, V et al. “The Operationalization of Fatigue in Frailty Scales : a Systematic Review.” AGEING RESEARCH REVIEWS 53 (2019): n. pag. Print.
APA
Knoop, V., Costenoble, A., Vella Azzopardi, R., Vermeiren, S., Debain, A., Jansen, B., Scafoglieri, A., et al. (2019). The operationalization of fatigue in frailty scales : a systematic review. AGEING RESEARCH REVIEWS, 53.
Chicago author-date
Knoop, V, A Costenoble, R Vella Azzopardi, S Vermeiren, A Debain, B Jansen, A Scafoglieri, et al. 2019. “The Operationalization of Fatigue in Frailty Scales : a Systematic Review.” Ageing Research Reviews 53.
Chicago author-date (all authors)
Knoop, V, A Costenoble, R Vella Azzopardi, S Vermeiren, A Debain, B Jansen, A Scafoglieri, I Bautmans, Ivan Bautmans, Dominque Verté, Ingo Beyer, Mirko Petrovic, Liesbeth De Donder, Tinie Kardol, Gina Rossi, Peter Clarys, Aldo Scafoglieri, Erik Cattrysse, Paul de Hert, and Bart Jansen. 2019. “The Operationalization of Fatigue in Frailty Scales : a Systematic Review.” Ageing Research Reviews 53.
Vancouver
1.
Knoop V, Costenoble A, Vella Azzopardi R, Vermeiren S, Debain A, Jansen B, et al. The operationalization of fatigue in frailty scales : a systematic review. AGEING RESEARCH REVIEWS. 2019;53.
IEEE
[1]
V. Knoop et al., “The operationalization of fatigue in frailty scales : a systematic review,” AGEING RESEARCH REVIEWS, vol. 53, 2019.
@article{8617523,
  abstract     = {Purpose: To identify the different fatigue items in existing frailty scales.
Methods: PubMed, Web of Knowledge and PsycINFO were systematically screened for frailty scales. 133 articles were included, describing 158 frailty scales. Fatigue items were extracted and categorized in 4 fatigue constructs: “mood state related tiredness”, “general feeling of tiredness”, “activity based feeling of tiredness” and “resistance to physical tiredness”.
Results: 120 fatigue items were identified, of which 100 belonged to the construct “general feeling of tiredness” and only 9 to the construct “resistance to physical tiredness”. 49,4% of the frailty scales included at least 1 fatigue item, representing 15±9,3% of all items in these scales. Fatigue items have a significantly higher weight in single domain (dominantly physical frailty scales) versus multi domain frailty scales (21±3.2 versus 10.6±9.8%, p=<0,05 ).
Conclusion: Fatigue is prominently represented in frailty scales, covering a great diversity in fatigue constructs and underlying pathophysiological mechanisms by which fatigue relates to frailty. Although fatigue items were more prevalent and had a higher weight in physical frailty scales, the operationalization of fatigue leaned more towards psychological constructs. This review can be used as a reference for choosing a suitable frailty scale depending on the type of fatigue of interest.},
  articleno    = {100911},
  author       = {Knoop, V and Costenoble, A and Vella Azzopardi, R and Vermeiren, S and Debain, A and Jansen, B and Scafoglieri, A and Bautmans, I and Bautmans, Ivan and Verté, Dominque and Beyer, Ingo and Petrovic, Mirko and De Donder, Liesbeth and Kardol, Tinie and Rossi, Gina and Clarys, Peter and Scafoglieri, Aldo and Cattrysse, Erik and de Hert, Paul and Jansen, Bart},
  issn         = {1568-1637},
  journal      = {AGEING RESEARCH REVIEWS},
  keywords     = {Frailty assessment,Fatigue,Tiredness,Aged,Frail elderly,HOSPITALIZED OLDER-ADULTS,ADVERSE HEALTH OUTCOMES,QUALITY-OF-LIFE,PHYSICAL-ACTIVITY,SKELETAL-MUSCLE,THERAPEUTIC INTERVENTIONS,MOBILITY DISABILITY,MAJOR DEPRESSION,ELDERLY-PEOPLE,INDEX},
  language     = {eng},
  pages        = {11},
  title        = {The operationalization of fatigue in frailty scales : a systematic review},
  url          = {http://dx.doi.org/10.1016/j.arr.2019.100911},
  volume       = {53},
  year         = {2019},
}

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