Abstract
Patient quality of life data can be acquired in a variety of ways, including over the telephone and through computerized questionnaires. However, if the method of collection produces different results, medical decisions regarding appropriate and cost-effective care may be influenced by collection method. We conducted an experiment where subjects had two quality of life measures, the time trade-off and rating scale utilities, assessed both in telephone interivews and via computer touchscreens. The order of telephone and touchscreen was randomized. We found that rating scale utilities were similar whether obtained via the telephone or via touchscreen regardless of which was done first. However, patients who had their time trade-off utilities assessed over the telephone first did not provide as consistent responses as those elicited first via touchscreen (p = 0.01). Caution is suggested when considering eliciting time trade-off over the telephone with subjects who have not had time trade-off elicited previously.
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- Clarke A. E., Goldstein M. K., Michelson D., Garber A. M., Lenert L. A. The effect of assessment method and respondent population on utilities elicited for Gaucher disease. Qual Life Res. 1997 Mar;6(2):169–184. doi: 10.1023/a:1026446302100. [DOI] [PubMed] [Google Scholar]
- Cowen M. E., Miles B. J., Cahill D. F., Giesler R. B., Beck J. R., Kattan M. W. The danger of applying group-level utilities in decision analyses of the treatment of localized prostate cancer in individual patients. Med Decis Making. 1998 Oct-Dec;18(4):376–380. doi: 10.1177/0272989X9801800404. [DOI] [PubMed] [Google Scholar]
- Kassirer J. P. Incorporating patients' preferences into medical decisions. N Engl J Med. 1994 Jun 30;330(26):1895–1896. doi: 10.1056/NEJM199406303302611. [DOI] [PubMed] [Google Scholar]
- Llewellyn-Thomas H. A., Sutherland H. J., Thiel E. C. Do patients' evaluations of a future health state change when they actually enter that state? Med Care. 1993 Nov;31(11):1002–1012. doi: 10.1097/00005650-199311000-00003. [DOI] [PubMed] [Google Scholar]
- O'Leary J. F., Fairclough D. L., Jankowski M. K., Weeks J. C. Comparison of time-tradeoff utilities and rating scale values of cancer patients and their relatives: evidence for a possible plateau relationship. Med Decis Making. 1995 Apr-Jun;15(2):132–137. doi: 10.1177/0272989X9501500205. [DOI] [PubMed] [Google Scholar]
- Torrance G. W., Feeny D. Utilities and quality-adjusted life years. Int J Technol Assess Health Care. 1989;5(4):559–575. doi: 10.1017/s0266462300008461. [DOI] [PubMed] [Google Scholar]
- Torrance G. W. Measurement of health state utilities for economic appraisal. J Health Econ. 1986 Mar;5(1):1–30. doi: 10.1016/0167-6296(86)90020-2. [DOI] [PubMed] [Google Scholar]