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Comparative Study
. 2012;58(3):249-57.
doi: 10.1159/000332214. Epub 2011 Nov 15.

Multidimensional predictors of fatigue among octogenarians and centenarians

Affiliations
Comparative Study

Multidimensional predictors of fatigue among octogenarians and centenarians

Jinmyoung Cho et al. Gerontology. 2012.

Abstract

Background: Fatigue is a common and frequently observed complaint among older adults. However, knowledge about the nature and correlates of fatigue in old age is very limited.

Objective: This study examined the relationship of functional indicators, psychological and situational factors and fatigue for 210 octogenarians and centenarians from the Georgia Centenarian Study.

Methods: Three indicators of functional capacity (self-rated health, instrumental activities of daily living, physical activities of daily living), two indicators of psychological well-being (positive and negative affect), two indicators of situational factors (social network and social support), and a multidimensional fatigue scale were used. Blocked multiple regression analyses were computed to examine significant factors related to fatigue. In addition, multi-group analysis in structural equation modeling was used to investigate residential differences (i.e., long-term care facilities vs. private homes) in the relationship between significant factors and fatigue.

Results: Blocked multiple regression analyses indicated that two indicators of functional capacity, self-rated health and instrumental activities of daily living, both positive and negative affect, and social support were significant predictors of fatigue among oldest-old adults. The multiple group analysis in structural equation modeling revealed a significant difference among oldest-old adults based on residential status.

Conclusion: The results suggest that we should not consider fatigue as merely an unpleasant physical symptom, but rather adopt a perspective that different factors such as psychosocial aspects can influence fatigue in advanced later life.

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Figures

Fig. 1
Fig. 1
Conceptual frame work: influencing factors and fatigue as a symptom. PADL = Physical activities of daily living; IADL = instrumental activities of daily living. Adapted from Chen et al. [30].
Fig. 2
Fig. 2
The relationships among fatigue, functional capacity (self-rated health, instrumental activities of daily living, physical activities of daily living), psychological factors (positive affect, negative affect), and situational factors (social network, social support) among private home residents. Note: Path coefficients are standardized parameter estimates and significant paths are displayed by solid lines. Nonsignificant paths are displayed by broken lines. SRH = Self-rated health; PADL = physical activities of daily living; IADL = instrumental activities of daily living; PA = positive affect; NA = negative affect; SN = social network; SS = social support. ** p < 0.01; *** p < 0.001.
Fig. 3
Fig. 3
The relationships among fatigue, functional capacity (self-rated health, instrumental activities of daily living, physical activities of daily living), psychological factors (positive affect, negative affect), and situational factors (social network, social support) among long-term care residents. Note: Path coefficients are standardized parameter estimates and significant paths are displayed by solid lines. Nonsignificant paths are displayed by broken lines. SRH = Self-rated health; PADL = physical activities of daily living; IADL = instrumental activities of daily living; PA = positive affect; NA = negative affect; SN = social network; SS = social support. * p < 0.05; ** p < 0.01; *** p < 0.001.

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