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- Article] Interpretation of Health and Vision Utilities in Low Vision Patients
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DocNo of ILP: 1460
Doc. Type: Article
Title: Interpretation of Health and Vision Utilities in Low Vision Patients
Authors: Malkin, AG; Goldstein, JE; Massof, RW
Full Name of Authors: Malkin, Alexis G.; Goldstein, Judith E.; Massof, Robert W.
Keywords by Author: time trade off; standard gamble; quality of life; health state; logit scale
Keywords Plus: TIME TRADE-OFF; VALUE-BASED MEDICINE; STANDARD-GAMBLE; RATING-SCALE; LIFE; STATES; VALIDITY; PEOPLE; IMPACT; VALUES
Abstract: Purpose. The purpose of the study is to evaluate the relationship between time trade off (TTO) and standard gamble (SG) estimates of health and vision utilities in a low vision patient sample. Methods. Telephone surveys were conducted on 74 low vision patients. All study participants were administered utility questionnaires that used the TTO and SG methods as they relate to health and vision. Results. There is high between-person variability in the relationship of TTO- to SG-estimated utilities for both vision and health. However, when transformed to logits, differences between TTO and SG utilities for health are equal to differences between TTO and SG utilities for vision. These differences are symmetrically distributed around the origin. The data were consistent with a model that includes both health or vision state and personal response criteria. The model explains between-person variability in the relationship of TTO to SG utilities as idiosyncratic differences within people between response criteria for making TTO and SG judgments. Conclusions. The large between-person variability in the relation of utilities estimated from TTO to those estimated from SG can be explained by large between-and within-person variability in personal TTO and SG response criteria. However, within each person, the response criteria used to judge health state are the same as the response criteria used to judge vision state. This observation leads to the conclusion that health and vision states are in the same units when estimated from utilities. A meta-analysis of published studies that compared TTO with SG utilities for different health states confirms the conclusion of the model that average utilities across people are criterion-free estimates of average health-related states on a common logit scale. (Optom Vis Sci 2012;89:288-295)
Cate of OECD: Clinical medicine
Year of Publication: 2012
Business Area: gamble
Detail Business: gamble
Country: USA
Study Area:
Name of Journal: OPTOMETRY AND VISION SCIENCE
Language: English
Country of Authors: [Malkin, Alexis G.; Goldstein, Judith E.; Massof, Robert W.] Johns Hopkins Univ, Sch Med, Wilmer Eye Inst, Lions Vis Res & Rehabil Ctr, Baltimore, MD 21205 USA
Press Adress: Malkin, AG (reprint author), Lions Vis Ctr, 550 N Broadway,6th Floor, Baltimore, MD 21205 USA.
Email Address: leximalkin@gmail.com
Citaion:
Funding: Research to Prevent Blindness; Louise L. Sloan Research Award; Multi-District 22 Lions Low Vision Fellowship
Lists of Citation: Bleichrodt H, 1997, J HEALTH ECON, V16, P155, DOI 10.1016/S0167-6296(96)00509-7; Brown MM, 2003, SURV OPHTHALMOL, V48, P204, DOI 10.1016/S0039-6257(02)00457-5; Drummond MF, 1987, METHODS EC EVALUATIO; Espallargues M, 2005, INVEST OPHTH VIS SCI, V46, P4016, DOI 10.1167/iovs.05-0072; Frick KD, 2009, ARCH OPHTHALMOL-CHIC, V127, P1205, DOI 10.1001/archophthalmol.2009.236; Furlong WJ, 2001, ANN MED, V33, P375, DOI 10.3109/07853890109002092; Gerson LB, 2005, AM J GASTROENTEROL, V100, P524, DOI 10.1111/j.1572-0241.40588.x; Hill AR, 2005, INT C SERIES, V1282, P573, DOI 10.1016/j.ics.2005.05.155; Jo MW, 2008, VALUE HEALTH, V11, P1186, DOI 10.1111/j.1524-4733.2008.00348.x; Kymes SM, 2007, OPTOMETRY VISION SCI, V84, P809, DOI 10.1097/OPX.0b013e3181337638; Kymes SM, 2005, BRIT J OPHTHALMOL, V89, P643, DOI 10.1136/bjo.2004.063784; Kymes SM, 2008, ARCH OPHTHALMOL-CHIC, V126, P1765, DOI 10.1001/archophthalmol.2008.525; Lee BS, 2008, OPHTHALMOLOGY, V115, P898, DOI 10.1016/j.ophtha.2007.06.008; Lin MR, 2006, PHYS THER, V86, P337; McNamee Paul, 2004, Eur J Health Econ, V5, P81; Puhan MA, 2007, J CLIN EPIDEMIOL, V60, P1029, DOI 10.1016/j.jclinepi.2007.03.001; Real FJ, 2008, BRIT J OPHTHALMOL, V92, P770, DOI 10.1136/bjo.2007.127407; Shah VA, 2004, OPHTHAL EPIDEMIOL, V11, P43, DOI 10.1076/opep.11.1.43.26436; Sharma S, 2002, BRIT J OPHTHALMOL, V86, P493, DOI 10.1136/bjo.86.5.493; TORRANCE GW, 1982, OPER RES, V30, P1043, DOI 10.1287/opre.30.6.1043; TORRANCE GW, 1976, HEALTH SERV RES, V11, P349; Torrance George W, 2002, Expert Rev Pharmacoecon Outcomes Res, V2, P99, DOI 10.1586/14737167.2.2.99; Van Wijck EEE, 1998, MED DECIS MAKING, V18, P400, DOI 10.1177/0272989X9801800407; Weinstein MC, 1996, JAMA-J AM MED ASSOC, V276, P1253, DOI 10.1001/jama.276.15.1253; Weinstein MC, 2009, VALUE HEALTH, V12, pS5, DOI 10.1111/j.1524-4733.2009.00515.x
Number of Citaion: 25
Publication: LIPPINCOTT WILLIAMS & WILKINS
City of Publication: PHILADELPHIA
Address of Publication: 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
ISSN: 1040-5488
29-Character Source Abbreviation: OPTOMETRY VISION SCI
ISO Source Abbreviation: Optom. Vis. Sci.
Volume: 89
Version: 3
Start of File: 288
End of File: 295
DOI: 10.1097/OPX.0b013e318241720f
Number of Pages: 8
Web of Science Category: Ophthalmology
Subject Category: Ophthalmology
Document Delivery Number: 918FE
Unique Article Identifier: WOS:000302233900010
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