Skip to main content
Mijn bibliotheek
Shop
Nieuws Boeken Tijdschriften Toetsvragen Web-tv Video Audio
Tips voor Mijn BSL
Inloggen

Welkom bij Scalda & Bohn Stafleu van Loghum

Scalda heeft ervoor gezorgd dat je Mijn BSL eenvoudig en snel kunt raadplegen.Je kunt de producten hieronder links aanschaffen en rechts inloggen.

» Andere revante producten voor Scalda studenten en medewerkers.

Registreer

Schaf de BSL Academy aan: 

BSL Academy mbo AG

Eenmaal aangeschaft kun je thuis, of waar ook ter wereld toegang krijgen tot Mijn BSL.

Heb je een vraag, neem dan contact op met Jan van der Velden.

Login

Als u al geregistreerd bent, hoeft u alleen maar in te loggen om onbeperkt toegang te krijgen tot Mijn BSL.

Inloggen
Top
Quality of Life Research
Gepubliceerd in:

01-03-2014

Thirty down, only ten to go?! Awareness and influence of a 10-year time frame in TTO

Auteurs: F. E. van Nooten, X. Koolman, J. J. V. Busschbach, W. B. F. Brouwer

Gepubliceerd in: Quality of Life Research | Uitgave 2/2014

Log in om toegang te krijgen
share
DELEN

Deel dit onderdeel of sectie (kopieer de link)

  • Optie A:
    Klik op de rechtermuisknop op de link en selecteer de optie “linkadres kopiëren”
  • Optie B:
    Deel de link per e-mail
    Link delen
publish
Publiceer nu

Abstract

Background

Time trade-off (TTO) exercises typically present respondents with a limited time horizon, for example 10 years, thus implicitly considerably reducing remaining life expectancy for the average respondent. It is unclear how this affects health state valuations.

Aim

The aim of the study is to investigate how awareness of the reduced life span implied by a 10-year TTO affects health state valuations, using an experimental design.

Methods

Two Web-based questionnaires (Q1 and Q2) were administered in a sample representative of the Dutch population. Both questionnaires contained three 10-year TTO exercises valuing three distinct health states, specified using the EQ-5D. Q1 used a TTO instruction not explicitly emphasizing the fact that remaining life expectancy was reduced to 10 years, while in Q2 respondents were explicitly made aware of this fact by emphasizing their implied age of death. Respondents answering Q1 were asked retrospectively whether they had been aware of their reduced life span due to the 10-year TTO.

Results

In total, 656 respondents completed the questionnaires (Q1: 339 and Q2: 317). The average age of the respondents was 43 years and 51 % of respondents were male. The average numbers of years traded off for the respondents of Q1 were for TTO1 0.443, TTO2 0.552, and TTO3 2.083 years. For the respondents of Q2, these averages were lower, i.e., TTO1 0.401 (p = 0.085 vs. Q1), TTO2: 0.546 (p = 0.036 vs. Q1), and TTO3: 1.467 years (p = 0.000 vs. Q1). Fifty-seven percent of respondents in Q1 confirmed that they were aware of the reduced life span. This spontaneous awareness had a limited and mixed influence on results. The generalized negative binomial regression analysis, explaining the time traded off showed that age, subjective life expectancy, and questionnaire Q2 (vs. Q1) were negatively associated with the years traded off, whereas education and worse health states in the TTO exercise had a significant positive impact on the years traded off. The probit model investigating the impact on the willingness to trade showed that age (−), education (+), subjective life expectancy (−), questionnaire Q2 versus Q1 (−), the interaction between Q2 and male gender (+), and worse health states in the TTO exercise (+) had a significant impact on the willingness to trade.

Conclusion

These findings emphasize the importance of expected and implied life expectancy in TTOs.
volgende artikel Associations of cancer and other chronic medical conditions with SF-6D preference-based scores in Medicare beneficiaries
Bijlagen
Alleen toegankelijk voor geautoriseerde gebruikers
Voetnoten
1
These health states are described as follows:
21211: I have some problems walking about, I have no problems with self-care, I have some problems with performing my usual activities, I have no pain or discomfort, I am not anxious or depressed;
22221: I have some problems walking about, I have some problems with self-care, I have some problems with performing my usual activities, I have moderate pain or discomfort, I am not anxious or depressed;
33312: I am confined to bed, I am unable to wash or dress myself, I am unable to perform my usual activities, I have no pain or discomfort, I am moderately anxious or depressed.
 
Literatuur
1.
Arnesen, T., & Trommald, M. (2005). Are QALYs based on time trade-off comparable? A systematic review of TTO methodologies. Health Economics, 14(1), 39–53.PubMedCrossRef
2.
Attema, A. E., & Brouwer, W. B. (2008). Can we fix it? Yes we can! But what? A new test of procedural invariance in TTO-measurement. Health Economics, 17(7), 877–885.PubMedCrossRef
3.
Attema, A. E., & Brouwer, W. B. (2009). The correction of TTO-scores for utility curvature using a risk-free utility elicitation method. Journal of Health Economics, 28(1), 234–243.PubMedCrossRef
4.
Badia, X., Monserrat, S., Roset, M., & Herdman, M. (1998). Feasibility, validity and test-retest reliability of scaling methods for health states: The visual analogue scale and the time trade-off. Quality of Life Research, 8(4), 303–310.CrossRef
5.
Bleichrodt, H. (2002). A new explanation for the difference between time trade-off utilities and standard gamble utilities. Health Economics, 11(5), 447–456.PubMedCrossRef
6.
Bleichrodt, H., Pinto, J. L., & Abellan-Perpiñan, J. M. (2003). A consistency test of the time trade-off. Journal of Health Econonomics, 22(6), 1037–1052.
7.
Brouwer, W. B. F., & Van Exel, N. J. A. (2005). Expectations about length and health related quality of life. Social Science and Medicine, 61(5), 1083–1094.PubMedCrossRef
8.
Clarke, A. E., Goldstein, M. K., Michelson, D., Garber, A. M., & Lenert, L. A. (1997). The effect of assessment method and respondent population on utilities elicited for Gaucher disease. Quality of Life Research, 6(2), 169–184.PubMedCrossRef
9.
Dolan, P., Gudex, C., Kind, P., & Williams, A. (1996). The time trade-off method: Results from a general population study. Health Economics, 5(2), 141–154.PubMedCrossRef
10.
Dolan, P. (1997). Modeling valuations for EuroQol health states. Medical Care, 35(11), 1095–1108.PubMedCrossRef
11.
Dolan, P. (2000). Effect of age on health state valuations. Journal of Health Services Research & Policy, 5(1), 17–21.
12.
Heintz, E., Krol, M., & Levin, L. A. (2013). The impact of patients’ subjective life expectancy on time tradeoff valuations. Medical Decision Making, 33(2), 261–270.PubMedCrossRef
13.
Kahneman, D., & Tversky, A. (1979). Prospect theory: An analysis of decision under risk. Econometrica, 47, 263–291.CrossRef
14.
Krol, M., Brouwer, W., & Sendi, P. (2006). Productivity costs in health-state valuations: Does explicit instruction matter? Pharmacoeconomics, 24(4), 401–414.PubMedCrossRef
15.
Krol, M., Sendi, P., & Brouwer, W. B. F. (2009). Breaking the silence. The influence of instructions regarding income considerations in health state valuations using TTO. Value in Health, 12(1), 172–180.PubMedCrossRef
16.
Lamers, L. M., McDonnell, J., Stalmeier, P. F., Krabbe, P. F., & Busschbach, J. J. (2006). The Dutch tariff: Results and arguments for an effective design for national EQ-5D valuation studies. Health Economics, 15(10), 1121–1132.PubMedCrossRef
17.
Mrus, J. M., Sherman, K. E., Leonard, A. C., Sherman, S. N., Mandell, K. L., & Tsevat, J. (2006). Health values of patients coinfected with HIV/hepatitis C: Are two viruses worse than one? Medical Care, 44(2), 158–166.PubMedCentralPubMedCrossRef
18.
Mrus, J. M., Leonard, A. C., Yi, M. S., Sherman, S. N., Fultz, S. L., Justice, A. C., et al. (2006). Health-related quality of life in veterans and nonveterans with HIV/AIDS. Journal of General Intern Medicine, 21(Suppl 5), S39–S47.CrossRef
19.
Robinson, A., & Spencer, A. (2006). Exploring challenges to TTO utilities: Valuing states worse than dead. Health Economics, 15(4), 393–402.PubMedCrossRef
20.
Souchek, J., Byrne, M. M., Kelly, P. A., O’Malley, K., Richardson, M., Pak, C., et al. (2005). Valuation of arthritis health states across ethnic groups and between patients and community members. Medical Care, 43(9), 921–928.PubMedCrossRef
21.
Stiggelbout, A. M., Eijkemans, M. J., Kiebert, G. M., Kievit, J., Leer, J. W., & De Haes, H. J. (1996). The ‘utility’ of the visual analog scale in medical decision making and technology assessment. Is it an alternative to the time trade-off? International Journal of Technology Assessment in Health Care, 12(2), 291–298.PubMedCrossRef
22.
Szabo, S. M., Davis, C., Holyoake, T. L., & Cortes, A. J. (2010). Multinational study of health state preference values associated with chronic myelogenous leukemia. Value Health, 13(1), 103–111.PubMedCrossRef
23.
Tilling, C., Krol, M., Brazier, J., Tsuchia, A., van Exel, NJA., & Brouwer, W. B. F. (2012). Does the EQ-5D reflect lost earnings? Pharmaco Economics, 30(1), 47–61.
24.
Torrance, G. W. (1976). Social preferences for health states: An empirical evaluation of three measurement techniques. Socio-Economic Planning Sciences, 10, 129–136.CrossRef
25.
van Nooten, F., & Brouwer, W. (2004). The influence of subjective expectations about length and quality of life on time trade-off answers. Health Economics, 13(8), 819–823.PubMedCrossRef
26.
van Nooten, F. E., Koolman, X., & Brouwer, W. B. (2009). The influence of subjective life expectancy on health state valuations using a 10 year TTO. Health Economics, 18(5), 549–558.PubMedCrossRef
27.
van der Pol, M., & Shiell, A. (2007). Extrinsic goals and time tradeoff. Medical Decision Making, 27(4), 406–413.PubMedCrossRef
28.
de Wit, G. A., Busschbach, J. J. V., & Charro, F. T. (2000). Sensitivity and perspective in the valuation of health status: Whose values count? Health Economics, 9, 109–126.PubMedCrossRef
29.
Woloshin, S., Schwartz, L. M., Moncur, M., Gabriel, S., & Tosteson, A. N. (2001). Assessing values for health: Numeracy matters. Medical Decision Making, 21(5), 382–390.PubMedCrossRef
30.
Zarate, V., Kind, P., & Chuang, L. H. (2008). Hispanic valuation of the EQ-5D health states: A social value set for Latin Americans. Value Health, 11(7), 1170–1177.PubMedCrossRef
Metagegevens
Titel
Thirty down, only ten to go?! Awareness and influence of a 10-year time frame in TTO
Auteurs
F. E. van Nooten
X. Koolman
J. J. V. Busschbach
W. B. F. Brouwer
Publicatiedatum
01-03-2014
Uitgeverij
Springer International Publishing
Gepubliceerd in
Quality of Life Research / Uitgave 2/2014
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-013-0495-5

Andere artikelen Uitgave 2/2014

Development and initial psychometric evaluation of the hepatitis C virus-patient-reported outcomes (HCV-PRO) instrument

A framework for understanding quality of life in individuals without capacity

  • Open Access

Fatigue interference with daily living among patients with inflammatory bowel disease

Measurement equivalence using a mixed-mode approach to administer health-related quality of life instruments

Validation of the Polish version of the EORTC QLQ-BM22 module for the assessment of health-related quality of life in patients with bone metastases

  • Brief Communication

Impact of laparoscopic colorectal segment resection on quality of life in women with deep endometriosis: one year follow-up

  • Brief Communication