Abstract
Purpose
This study sought to determine the psychometric properties of the Chinese version of the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) in a sample of 402 primary breast cancer patients receiving chemotherapy after surgery.
Methods
Four-hundred and two subjects were interviewed with the Chinese version of the WHODAS 2.0. Patients also completed the Functional Assessment of Cancer Therapy-Breast (FACT-B). Internal consistency reliability was measured by Cronbach’s α. Spearman correlation coefficients between total scores and subscales of FACT-B and WHODAS 2.0 were examined to get the convergent validity. Independent sample t test was applied to test discriminant validity by comparing the difference of disability scores for different degree of relevant symptoms. The factor structure of the WHODAS 2.0 was examined by Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis.
Results
The Chinese version of the WHODAS 2.0 showed satisfactory internal consistency (r, 0.72–0.92), convergent validity and discriminant validity. After 4 items(item D2.2: standing up; D3.3: eating; D4.5: sexual activities; and D6.3: living with dignity) were excluded, EFA identified seven separate factors for ‘Self-care and Household activities,’ ‘Getting along with people,’ ‘Getting around,’ ‘Understanding,’ ‘Communicating,’ ‘Participation in society’ and ‘Family burden’(explained variance 72.13 %). The reduced model also presented the best fit [Confirmatory Fit Index = 0.914, Tucker-Lewis Index = 0.900, Root Mean Square Error of Approximation = 0.069] compared with the model suggested by EFA and hypothesized a prior.
Conclusions
Overall, the Chinese version of the WHODAS 2.0 is a reliable and valid instrument for measuring activity limitation and participation restrictions in Chinese breast cancer patients receiving chemotherapy.
References
Mathers, C. D., & Loncar, D. (2006). Projections of global mortality and burden of disease from 2002 to 2030. PLoS Med, 3(11), 2011–2030.
ICIDH-2: international classification of functioning and disability (1999) World Health Organization, Geneva.
Bickenbach, J. E., Chatterji, S., Badley, E. M., & Ustun, T. B. (1999). Models of disablement, universalism, and the international classification of impairments, disabilities and handicaps. Social Science and Medicine, 48(9), 1173–1187.
Ustun, T. B., Chatterji, S., Kostanjsek, N., Rehm, J., Kennedy, C., Epping-Jordan, J., et al. (2010). Developing the World Health Organization Disability Assessment Schedule 2.0. Bulletin of World Health Organization, 88(11), 815–823.
World Health Organization Disability Assessment Schedule II (WHODASII) (2001) http://www.who.int/icidh/whodas/index.html. Accessed on 6 July 2009.
Garin, O., Ayuso-Mateos, J., Almansa, J., Nieto, M., Chatterji, S., Vilagut, G., et al. (2010). Validation of the “World Health Organization Disability Assessment Schedule, WHODAS-2” in patients with chronic diseases. Health and Quality of Life Outcomes, 8(1), 51–66.
Murphy, B., Herrman, H., Hawthorne, G., Pinzone, T., & Evert, H. (2000). Australian WHOQOL instruments: User’s manual and interpretation guide. Melbourne: The University of Melbourne Department of Psychiatry.
Cella, D. F., Tulsky, D. S., Gray, G., Sarafian, B., Linn, E., Bonomi, A., et al. (1993). The functional assessment of cancer therapy scale: Development and validation of the general measure. Journal of Clinical Oncology, 11(3), 570–579.
Chwastiak, L. A., & Von Korff, M. (2003). Disability in depression and back pain: Evaluation of the World Health Organization Disability Assessment Schedule (WHODAS II) in a primary care setting. Journal of Clinical Epidemiology, 56(6), 507–514.
Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). Hillsdale, NJ: Lawrence Erlbaum.
Posl, M., Cieza, A., & Stucki, G. (2007). Psychometric properties of the WHODASII in rehabilitation patients. Quality of Life Research, 16(9), 1521–1531.
Hair, J. F., Black, W. C., Babin, B. J., Anderson, R. E., & Tatham, R. L. (2006). Multivariate data analysis (6th ed.). New Jersey: Prentice Hall.
Hu, L., & Bentler, P. M. (1999). Cutoff criterion for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling, 6(1), 1–55.
Kemmler, G., Schemied, B., Shetty-Lee, A., Zangerle, R., Hinterhuber, H., Schussler, G., et al. (2003). Quality of life of HIV-infected patients: Psychometric properties and validation of the German version of the MQOL-HIV. Quality of Life Research, 12(8), 1037–1050.
Ahles, T. A., & Saykin, A. (2001). Cognitive effects of standard-dose chemotherapy in patients with cancer. Cancer Investigation, 19(8), 812–820.
Minisini, A., Atlay, G., Bottomley, A., Puglisi, F., Piccart, M., & Biganzoli, L. (2004). What is the effect of anticancer treatment on cognitive function? Lancet Oncology, 5(5), 273–282.
Reid-Arndt, S., Yee, A., Perry, M. C., & Hsieh, C. (2009). Cognitive and psychological factors associated with early post-treatment functional outcomes in breast cancer survivors. Journal of Psychosocial Oncology, 27(4), 415–434.
Tchen, N., Juffs, H. G., Downie, F. P., Yi, Q. L., Hu, H. X., Chemerynsky, I., et al. (2003). Cognitive function, fatigue, and menopausal symptoms in women receiving adjuvant chemotherapy for breast cancer. Journal of Clinical Oncology, 21(22), 4175–4183.
Avis, N. E., Crawford, S., & Manuel, J. (2004). Psychosocial problems among younger women with breast cancer. Psycho-Oncology, 13(5), 295–308.
Lohr, K. N. (2002). Assessing health status and quality of life instruments: Attributes and review criteria. Quality of Life Research, 11(3), 193–205.
Brady, M. J., Cella, D. F., Mo, F., Bonomi, A. E., Tulsky, D. S., Lloyd, S. R., et al. (1997). Reliability and validity of the functional assessment of cancer therapy-breast quality of life instrument. Journal of Clinical Oncology, 15(3), 974–986.
Yellen, B. Y., Cella, D. F., Webster, K., Blendowski, C., Kaplan, E., & Sarokhan, B. (1997). Measuring fatigue and other anemia-related symptoms with the Functional Assessment of Cancer Therapy measurement system. Journal of Pain and System Management, 13(2), 63–74.
McKibbin, C., Patterson, T. L., & Jeste, D. V. (2004). Assessing disability in older patients with schizophrenia: Results from the WHODAS-II. The Journal of Nervous and Mental Disease, 192(6), 405–413.
Chen, F. F., West, S. G., & Sousa, K. H. (2006). A comparison of bifactor and second order models of quality of life. Multivariate Behavioral Research, 41(2), 189–225.
Tang, S. T. (2009). Supporting cancer patients dying at home or at a hospital for Taiwanese family caregivers. Cancer Nursing, 32(2), 151–157.
Acknowledgments
This study was made possible in part by a Grant of Higher Education Research Program from Education Affairs Bureau of Liaoning Province (L2010677). Professor Zhuoying Qiu as the WHO coordinator of ICF program in China gave permission to the application of Chinese version of WHODAS 2.0. We are grateful to Mr. Peter Messenger for his assistance on language correction.
Author information
Authors and Affiliations
Corresponding author
Appendix
Appendix
32-item interviewer-administered the World Health Organization Disability Assessment Schedule 2.0 (WHODAS2.0)
Domain question | None | Mild | Moderate | Severe | Extreme/Can not do |
---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | |
Domain 1: Understanding & Communicating in the last 30 days, how much difficulty did you have in: | |||||
D1.1 concentrating | |||||
D1.2 remembering | |||||
D1.3 finding solutions | |||||
D1.4 learning new task | |||||
D1.5 understanding | |||||
D1.6 conversation | |||||
Domain 2:Getting around in the last 30 days, how much difficulty did you have in: | |||||
D2.1 standing | |||||
D2.2 standing up | |||||
D2.3 moving around | |||||
D2.4 getting out of home | |||||
D2.5 walking | |||||
Domain 3: Self-care in the last 30 days, how much difficulty did you have in: | |||||
D3.1 washing | |||||
D3.2 dressing | |||||
D3.3 eating | |||||
D3.4 staying by yourself | |||||
Domain 4: Getting along with people in the last 30 days, how much difficulty did you have in: | |||||
D4.1 dealing with people unknown | |||||
D4.2 maintaining friendship | |||||
D4.3 getting along with people close | |||||
D4.4 make new friends | |||||
D4.5 sexual activities | |||||
Domain 5: Household activities in the last 30 days, how much difficulty did you have in: | |||||
D5.1 household responsibilities | |||||
D5.2 doing household tasks well | |||||
D5.3 doing housework needed | |||||
D5.4 household work done quickly | |||||
Domain 6: Participation in society in the last 30 days, | |||||
D6.1 how much of a problem did you have in joining in communities activities | |||||
D6.2 how much of a problem did you have because of barriers | |||||
D6.3 how much of a problem did you have living with dignity | |||||
D6.4 how much time did you spend on health condition | |||||
D6.5 how much have you been emotionally affected | |||||
D6.6 how much has your health been a drain on financial resources | |||||
D6.7how much of a problems did your family have | |||||
D6.8 how much of a problem did you have in doing things for relaxation |
Rights and permissions
About this article
Cite this article
Zhao, H.P., Liu, Y., Li, H.L. et al. Activity limitation and participation restrictions of breast cancer patients receiving chemotherapy: psychometric properties and validation of the Chinese version of the WHODAS 2.0. Qual Life Res 22, 897–906 (2013). https://doi.org/10.1007/s11136-012-0212-9
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11136-012-0212-9