Generalizability of valuations on health states collected with the EuroQol<sup>c</sup>‐questionnaire

Essink‐Bot, Marie‐Louise; Stouthard, Marlies E. A.; Bonsel, Gouke J.

doi:10.1002/hec.4730020307

Cited by 135 publications

(84 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Generalisation of the study results may be further restricted due to the composition of the panel that performed the valuation tasks and to the selection of the 13 health states. A different selec tion of respondents could lead to different results, although several studies have shown that these effects in this context are minor (Essink-Bot et al 1993;EuroQoI Group, 1990). The selection of the health states may have to some extent influenced the results of this study, although we expect the re lationship between the methods to be hardly influ enced because the sample of the health states was well chosen.…”

Section: O N C L U S Io N S a N D Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The comparability and reliability of five health-state valuation methods

Krabbe

Essink‐Bot

Bonsel

1997

Social Science & Medicine

Self Cite

114

View full text Add to dashboard Cite

Please be advised that this information was generated on 2018-05-09 and may be subject to change.P e r g a m o n Soc. Sci. Med, Vol. 45, N o. I l , pp. 1641-1652, 1997 © 1997 Elsevier Science Ltd. A ll rights reserved P I I : S 0 2 7 7 -9 5 3 6 (9 7 )0 0 0 9 9 -3 Printed in Great Britain 0277-9536/97 $17. Abstract-The objective of the study was to consider five methods for valuing health states with respect to their comparability (convergent validity, value functions) and reliability. Valuation tasks were per formed by 104 student volunteers using five frequently used valuation methods: standard gamble (SG), time trade-off (TTO), rating scale (RS), willingness-to-pay (WTP) and the paired comparisons method (PC). Throughout the study, the EuroQoI classification system was used to construct 13 health-state descriptions. Validity was investigated using the multitrait-multimethod (M TM M ) methodology. The extent to which results of one method could be predicted by another was examined by transformations. Reliability of the methods was studied parametrically with Generalis ability Theory (an A N O V A exten sion), as well as non-parametrically. Mean values for SG were slightly higher than TTO values. The RS could be distinguished from the other methods. After a simple power transformation, the RS values were found to be close to SG and TTO. Mean values of WTP were linearly related to SG and TTO, except at the extremes of the scale. However, the reliability of WTP was low and the number of incon sistencies substantial. Valuations made by the RS proved to be the most reliable. Paired comparisons did not provide stable results. In conclusion, the results of the parametric transformation function between RS and SG/TTO provide evidence to justify the current use of RS (with transformations) not only for reasons of feasibility and reliability but also for reasons o f comparability. A definite judgement on PC requires data of a complete design. Due to the specific structure of the correlation matrix which is inherent in valuing health states, we believe that full M TM M is not applicable for the standard analysis of health-state valuations.

show abstract

Section: O N C L U S Io N S a N D Discussionmentioning

confidence: 99%

“…The generic EuroQoI descriptive system for health states is suitable for all valuation methods and has been used extensively in fundamental and applied valuation research (EuroQoI Group, 1990;Essink-Bot et al, 1993;Agt van et a l , 1994;O 'Hanlon et a l , 1994;Selai and Rosser, 1995).…”

mentioning

confidence: 99%

The comparability and reliability of five health-state valuation methods

Krabbe

Essink‐Bot

Bonsel

1997

Social Science & Medicine

Self Cite

114

View full text Add to dashboard Cite

show abstract

“…Generic HRQoL The participant's generic HRQoL was measured with the 12-item Short Form (SF-12) and the EuroQol questionnaire (EQ-5D) (Essink-Bot et al, 1993;Ware et al, 1996;Gandek et al, 1998;Kind et al, 2005). The SF-12 is a shorter version of the SF-36 and consists of a physical component summary (PCS) and a mental component summary (MCS) (Ware et al, 1996).…”

Section: Methodsmentioning

confidence: 99%

“…Respondents were also asked to rate their own health on the visual analogue scale (VAS) of the EQ-5D, ranging from 0 (worst imaginable health status) to 100 (best imaginable health status) (Essink-Bot et al, 1993;Kind et al, 2005). Participants completed the EQ-5D VAS at all four assessment points (i.e.…”

Section: Methodsmentioning

confidence: 99%

Short-term health-related quality of life consequences in a lung cancer CT screening trial (NELSON)

et al. 2009

View full text Add to dashboard Cite

BACKGROUND: In lung cancer CT screening, participants often have an indeterminate screening result at baseline requiring a follow-up CT. In subjects with either an indeterminate or a negative result after screening, we investigated whether health-related quality of life (HRQoL) changed over time and differed between groups in the short term. METHODS: A total of 733 participants in the NELSON trial received four questionnaires: T0, before randomisation; T1, 1 week before the baseline screening; T2, 1 day after the screening; and T3, 2 months after the screening results but before the 3-month follow-up CT. HRQoL was measured as generic HRQoL (the 12-item Short Form, SF-12; the EuroQol questionnaire, EQ-5D), anxiety (the Spielberger State-Trait Anxiety Inventory, STAI-6), and lung-cancer-specific distress (the Impact of Event Scale, IES). For analyses, repeated-measures analysis of variance was used, adjusted for covariates. RESULTS: Response to each questionnaire was 88% or higher. Scores on SF-12, EQ-5D, and STAI-6 showed no clinically relevant changes over time. At T3, IES scores that were clinically relevant increased after an indeterminate result, whereas these scores showed a significant decrease after a negative result. At T3, differences in IES scores between the two baseline result groups were both significant and clinically relevant (Po0.01). CONCLUSION: This longitudinal study among participants of a lung cancer screening programme showed that in the short term recipients of an indeterminate result experienced increased lung-cancer-specific distress, whereas the HRQoL changes after a negative baseline screening result may be interpreted as a relief.

show abstract

“…The EuroQol scores of our patients were compared with those of the same GO patient population 'during treatment' and to a specific Dutch reference population for the EuroQol, described by Essink-Bot et al (13). These comparisons could not be adjusted for genderdifferences because no gender-specific data were available of the reference population (13).…”

Section: Comparison Of Hrql Scores With Other Populationsmentioning

confidence: 99%

Long-term effects of Graves' ophthalmopathy on health-related quality of life

Terwee

Wakelkamp

Tan

et al. 2002

European Journal of Endocrinology

110

View full text Add to dashboard Cite

Objective: Little is known about the long-term effects of Graves' ophthalmopathy (GO) on healthrelated quality of life (HRQL) after the eye treatment is considered to be finished. The aim of this study was to quantify these effects using validated HRQL questionnaires. Design: A cross-sectional follow-up study was carried out in GO patients who had started radiotherapy and/or prednisone treatment between 1982 and 1992. Methods: Between 1998 and 2000 these patients received an HRQL questionnaire containing the SF-36, EuroQol and GO-QOL questionnaires. All patients were invited for a follow-up ophthalmological examination. HRQL scores of the respondents were compared with those of two reference populations of 'healthy' persons and to scores of several other GO populations. Results: One hundred and sixty-eight patients were included; 163 completed the HRQL questionnaire and 154 visited the outpatient clinic. The median follow-up was 11.7 years. A considerable number of symptoms related to GO were found. More than half of the patients had diplopia and 28% had a low visual acuity. Sixty per cent had a proptosis of at least 20 mm. The HRQL scores were considerably better than those of newly diagnosed GO patients (untreated) and GO patients who completed the questionnaire during treatment, but worse than those of 'healthy' persons. Although we did not perform a longitudinal study, we included a selected group of patients who had been treated with radiotherapy and/or prednisone in the Academic Medical Centre of the University of Amsterdam, and though we could not assess HRQL at comparable times after receiving treatment, this is the first study that presents any data on the long-term effects of GO on HRQL. Conclusion: GO has a marked negative effect on HRQL, even many years after treatment. These findings suggest that GO should be considered a chronic disease. Aftercare is needed for these patients after their immunosuppressive and surgical treatments.

show abstract

Generalizability of valuations on health states collected with the EuroQol^c‐questionnaire

Abstract: Although the existence of selective non-response cannot be excluded, its relevance can be considered to be small. This finding is encouraging for the use of empirical utility values in allocative decisions.

Cited by 135 publications

References 9 publications

The comparability and reliability of five health-state valuation methods

The comparability and reliability of five health-state valuation methods

Short-term health-related quality of life consequences in a lung cancer CT screening trial (NELSON)

Long-term effects of Graves' ophthalmopathy on health-related quality of life

Contact Info

Product

Resources

About

Generalizability of valuations on health states collected with the EuroQolc‐questionnaire

Abstract: Although the existence of selective non-response cannot be excluded, its relevance can be considered to be small. This finding is encouraging for the use of empirical utility values in allocative decisions.

Cited by 135 publications

References 9 publications

The comparability and reliability of five health-state valuation methods

The comparability and reliability of five health-state valuation methods

Short-term health-related quality of life consequences in a lung cancer CT screening trial (NELSON)

Long-term effects of Graves' ophthalmopathy on health-related quality of life

Contact Info

Product

Resources

About

Generalizability of valuations on health states collected with the EuroQol^c‐questionnaire