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Psychometric properties of the Korean version of the Pittsburgh Fatigability Scale in breast cancer survivors

Authors
 Min Kyeong Jang  ;  Sue Kim  ;  Chang Gi Park  ;  Eileen G Collins  ;  Lauretta T Quinn  ;  Nancy W Glynn  ;  Carol Estwing Ferrans 
Citation
 HEALTH AND QUALITY OF LIFE OUTCOMES, Vol.19(1) : 179, 2021-07 
Journal Title
HEALTH AND QUALITY OF LIFE OUTCOMES
Issue Date
2021-07
MeSH
Adult ; Breast Neoplasms / complications ; Breast Neoplasms / psychology* ; Cancer Survivors / psychology* ; Cross-Sectional Studies ; Factor Analysis, Statistical ; Fatigue / complications ; Fatigue / psychology* ; Female ; Humans ; Male ; Middle Aged ; Psychometrics / instrumentation ; Quality of Life* ; Reproducibility of Results ; Republic of Korea ; Surveys and Questionnaires / standards*
Keywords
Breast neoplasms ; Cancer ; Fatigability ; Fatigue ; Oncology ; Psycho-oncology ; Survivors ; Validation
Abstract
Background: Fatigability has recently emerged in oncology as a concept that anchors patients' perceptions of fatigue to defined activities of specified duration and intensity. This study aimed to examine the psychometric properties of the Korean version of the Pittsburgh Fatigability Scale (K-PFS) for women with breast cancer.

Methods: This cross-sectional study involved 196 women with breast cancer recruited from a tertiary hospital in Seoul, Korea. Reliability was evaluated using Cronbach's alpha, and confirmatory factor analysis was conducted to examine the factor structure of the K-PFS. Four goodness-of-fit values were evaluated: (1) the comparative fit index (CFI), (2) the Tucker-Lewis index (TLI), (3) the root mean square error of approximation (RMSEA), and (4) the standardized root mean square residual (SRMR).

Results: Of the 196 survivors, 71.1% had greater physical fatigability (K-PFS Physical score ≥ 15) and 52.6% had greater mental fatigability (K-PFS Mental score ≥ 13). The Cronbach's alpha coefficient for the total K-PFS scale was 0.926, and the coefficients for the physical and mental fatigability domains were 0.870 and 0.864, respectively. In the confirmatory factor analysis for physical fatigability, the SRMR value (0.076) supported goodness of fit, but other model fit statistics did not (CFI = 0.888, TLI = 0.826, and RMSEA = 0.224). For mental fatigability, although three goodness-of-fit values were acceptable (CFI = 0.948, TLI = 0.919, and SRMR = 0.057), the RMSEA value (0.149) did not indicate good model fit. However, each item coefficient was statistically significant (> 0.5), and the K-PFS was therefore found to be valid from a theoretical perspective.

Conclusion: This study provides meaningful information on the reliability and validity of the K-PFS instrument, which was developed to meet an important need in the context of breast cancer survivors. Additional research should examine its test-retest reliability and construct validity with performance measures.
Files in This Item:
T202125305.pdf Download
DOI
10.1186/s12955-021-01815-8
Appears in Collections:
3. College of Nursing (간호대학) > Dept. of Nursing (간호학과) > 1. Journal Papers
Yonsei Authors
Kim, Sue(김수) ORCID logo https://orcid.org/0000-0003-3785-2445
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/187776
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