HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when Rapid Responses are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Lin, M.-R. Articles by Chen, C.-Y. Search for Related Content PubMed PubMed Citation Articles by Lin, M.-R. Articles by Chen, C.-Y. Related Collections Spinal Cord Injuries Tests and Measurements Social Bookmarking                      What's this?

Rating Scale, Standard Gamble, and Time Trade-off for People With Traumatic Spinal Cord Injuries

MR Lin, PT, PhD, is Associate Professor, Institute of Injury Prevention and Control, Taipei Medical University, 250 Wu-Hsing St, Taipei 110, Taiwan, Republic of China
HF Hwang, MS, RN, is Instructor, Department of Nursing, National Taipei College of Nursing, Taipei, Taiwan, Republic of China
KP Chung, PhD, is Associate Professor, Institute of Health Care Organization Administration, College of Public Health, National Taiwan University, Taipei, Taiwan, Republic of China
C Huang, PhD, is Assistant Professor, Department of Health Care Management, National Taipei College of Nursing
CY Chen, MS, is Research Assistant, Institute of Injury Prevention and Control, Taipei Medical University

(mrlin{at}tmu.edu.tw). Address all correspondence to Dr Lin

Background and Purpose. The rating scale (RS), standard gamble (SG), and time trade-off (TTO) for people with traumatic spinal cord injuries (SCIs) have not been reported. This study compared psychometric performances of these preference-based measures among people with SCIs in Taiwan. Subjects and Methods. In total, 187 subjects from a nationwide registry of people with traumatic SCIs were interviewed by telephone. Score distributions, interrater reliability, discriminant ability, and convergent validity for the RS, SG, and TTO were compared. Results. The mean (median) values of the RS, SG, and TTO were 0.67 (0.70), 0.64 (0.75), and 0.53 (0.50), respectively, and their corresponding intraclass correlation coefficients for intrarater and interrater test-retest reliability were .92 and .89, .78 and .73, and .91 and .78. Compared with the SG and TTO, the RS had fewer floor and ceiling values as well as percent changes, more missing observations, a larger effect size, and better discrimination ability. The results of Spearman correlation and factor analysis showed that the SG strongly converged with the TTO (r=.65, and in a single common factor), but they weakly converged with the RS (r=.33 with the SG and r=.27 with the TTO). In the linear regression models, the RS was significantly associated with neurological severity, employment, educational level, and self-care ability; the SG was associated with neurological severity and employment; and the TTO was associated only with neurological severity. Discussion and Conclusion. The RS generally performed better than the SG and TTO among people with traumatic SCIs; however, the underlying construct measured by the RS differed considerably from those measured by the SG and TTO. [Lin MR, Hwang HF, Chung KP, et al. Rating scale, standard gamble, and time trade-off for people with traumatic spinal cord injuries.

Key Words: Health-related quality of life • Preference • Rating scale • Spinal cord injury • Standard gamble • Time trade-off

CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				M. F. Janssen, E. Birnie, and G. Bonsel Feasibility and Reliability of the Annual Profile Method for Deriving QALYs for Short-Term Health Conditions Med Decis Making, July 1, 2008; 28(4): 500 - 510. [Abstract] [PDF]

				J A Haagsma, E F van Beeck, S Polinder, N Hoeymans, S Mulder, and G J Bonsel Novel empirical disability weights to assess the burden of non-fatal injury Inj. Prev., February 1, 2008; 14(1): 5 - 10. [Abstract] [Full Text] [PDF]