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Assessing health‐related quality of life of Chinese‐American breast cancer survivors: a measurement validation study
Author(s) -
AshingGiwa Kimlin,
Lam Chun Nok,
Xie Bin
Publication year - 2013
Publication title -
psycho‐oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.41
H-Index - 137
eISSN - 1099-1611
pISSN - 1057-9249
DOI - 10.1002/pon.3030
Subject(s) - construct validity , confirmatory factor analysis , quality of life (healthcare) , sf 36 , exploratory factor analysis , clinical psychology , construct (python library) , psychology , breast cancer , reliability (semiconductor) , psychometrics , medicine , health related quality of life , cancer , structural equation modeling , psychotherapist , statistics , programming language , power (physics) , physics , mathematics , disease , quantum mechanics , computer science
Background This study reports on the internal consistency and construct validity of the Functional Assessment of Cancer Therapy – General (FACT‐G v.4) and 12‐item Short Form Health Survey (SF‐12 v.2) health‐related quality of life (HRQOL) instruments with Chinese‐American breast cancer survivors (BCS). Methods Participants completed mailed questionnaires at baseline and 12‐month follow‐up. HRQOL was measured using the FACT‐G and the SF‐12. The measures were evaluated by construct validity and reliability tests. Factor analyses were performed in a two‐wave assessment through exploratory and confirmatory analyses at baseline and follow‐up. Results Seventy‐four Chinese‐American BCS participated. Excellent internal consistency ( α > 0.85) and good construct validity for the FACT‐G (five factors) and the SF‐12 (two factors) were observed. Factor structure of both measures accounted for 70% of the common variance in physical, social/family, emotional, and functional well‐being subscales for the FACT‐G and in physical and mental components for the SF‐12. Conclusions Our data demonstrated good internal consistency and construct validity of the measures. The psychometric findings demonstrate the utility of the FACT‐G and the SF‐12 to assess HRQOL among Chinese‐American BCS. Copyright © 2012 John Wiley & Sons, Ltd.