Responsiveness was similar between direct and mapped SF-6D in colorectal cancer patients who declined

Wong, CKH; Mulhern, B; Wan, YF; Lam, CLK

Responsiveness was similar between direct and mapped SF-6D in colorectal cancer patients who declined

Wong, CKH Mulhern, B

Wan, YF Lam, CLK

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Publication Type:: Journal Article
Citation:: Journal of Clinical Epidemiology, 2014, 67 (2), pp. 219 - 227
Issue Date:: 2014-02-01

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Field	Value	Language
dc.contributor.author	Wong, CKH	en_US
dc.contributor.author	Mulhern, B https://orcid.org/0000-0003-3656-8063	en_US
dc.contributor.author	Wan, YF	en_US
dc.contributor.author	Lam, CLK	en_US
dc.date.available	2013-08-12	en_US
dc.date.issued	2014-02-01	en_US
dc.identifier.citation	Journal of Clinical Epidemiology, 2014, 67 (2), pp. 219 - 227	en_US
dc.identifier.issn	0895-4356	en_US
dc.identifier.uri	http://hdl.handle.net/10453/115722
dc.description.abstract	Objectives To evaluate the responsiveness of generic and mapped preference-based measures based on the anchor of global change in health condition of colorectal cancer (CRC) patients. Study Design and Setting A baseline sample of 333 Chinese CRC patients was recruited between September 2009 and July 2010 and was surveyed prospectively at 6-month follow-up. Preference-based indices were derived from the generic SF-6D measure (SF-6D Direct), from the Short Form-12 (SF-6DSF-12), and mapped from the condition-specific Functional Assessment of Cancer Therapy-Colorectal (SF-6DFACT-C). Responsiveness of three measures was assessed using standardized effect size, standardized response mean, responsiveness statistic, and receiver operating characteristic (ROC) curve analysis. Results The SF-6DSF-12 and SF-6DFACT-C indices were significantly more responsive to detect positive changes than the SF-6DDirect index in improved groups. In worsened group, the SF-6DDirect and SF-6D FACT-C indices showed significant decline from baseline to 6-month follow-up. The areas under the ROC curve for SF-6DDirect and SF-6DFACT-C indices were not statistically different from 0.7. The SF-6DFACT-C index was more responsive to changes in health status compared with other indices. Conclusion Direct SF-6D measure was more responsive than mapped preference-based measures in improved group but the direction was reversed in worsened group. The use of a preference-based index mapped from a condition-specific measure captures both negative and positive important changes among CRC. © 2014 Elsevier Inc. All rights reserved.	en_US
dc.relation.ispartof	Journal of Clinical Epidemiology	en_US
dc.relation.isbasedon	10.1016/j.jclinepi.2013.08.011	en_US
dc.subject.classification	Epidemiology	en_US
dc.subject.mesh	Humans	en_US
dc.subject.mesh	Colorectal Neoplasms	en_US
dc.subject.mesh	Health Status Indicators	en_US
dc.subject.mesh	Longitudinal Studies	en_US
dc.subject.mesh	ROC Curve	en_US
dc.subject.mesh	Psychometrics	en_US
dc.subject.mesh	Health Status	en_US
dc.subject.mesh	Quality of Life	en_US
dc.subject.mesh	Aged	en_US
dc.subject.mesh	Middle Aged	en_US
dc.subject.mesh	Female	en_US
dc.subject.mesh	Male	en_US
dc.subject.mesh	Patient Preference	en_US
dc.title	Responsiveness was similar between direct and mapped SF-6D in colorectal cancer patients who declined	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	67	en_US
utslib.for	1117 Public Health and Health Services	en_US
utslib.for	01 Mathematical Sciences	en_US
utslib.for	11 Medical and Health Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Business
pubs.organisational-group	/University of Technology Sydney/Strength - CHERE - Centre for Health Economics Research and Evaluation
utslib.copyright.status	closed_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	67	en_US

Abstract:

Objectives To evaluate the responsiveness of generic and mapped preference-based measures based on the anchor of global change in health condition of colorectal cancer (CRC) patients. Study Design and Setting A baseline sample of 333 Chinese CRC patients was recruited between September 2009 and July 2010 and was surveyed prospectively at 6-month follow-up. Preference-based indices were derived from the generic SF-6D measure (SF-6D Direct), from the Short Form-12 (SF-6DSF-12), and mapped from the condition-specific Functional Assessment of Cancer Therapy-Colorectal (SF-6DFACT-C). Responsiveness of three measures was assessed using standardized effect size, standardized response mean, responsiveness statistic, and receiver operating characteristic (ROC) curve analysis. Results The SF-6DSF-12 and SF-6DFACT-C indices were significantly more responsive to detect positive changes than the SF-6DDirect index in improved groups. In worsened group, the SF-6DDirect and SF-6D FACT-C indices showed significant decline from baseline to 6-month follow-up. The areas under the ROC curve for SF-6DDirect and SF-6DFACT-C indices were not statistically different from 0.7. The SF-6DFACT-C index was more responsive to changes in health status compared with other indices. Conclusion Direct SF-6D measure was more responsive than mapped preference-based measures in improved group but the direction was reversed in worsened group. The use of a preference-based index mapped from a condition-specific measure captures both negative and positive important changes among CRC. © 2014 Elsevier Inc. All rights reserved.

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http://hdl.handle.net/10453/115722