Maximising responses to discrete choice experiments: A randomised trial

被引：25

作者：

Coast J. ^{[1
,5
]}

Flynn T.N. ^{[2
]}

Salisbury C. ^{[3
]}

Louviere J. ^{[4
]}

Peters T.J. ^{[3
]}

机构：

[1] Health Economics Facility, Health Services Management Centre, University of Birmingham, Birmingham

[2] Medical Research Council Health Services Research Collaboration, University of Bristol, Bristol

[3] Department of Community Based Medicine, University of Bristol, Bristol

[4] University of Technology, Sydney, NSW

[5] Health Economics Facility, University of Birmingham, Birmingham

来源：

Applied Health Economics and Health Policy | 2006年 / 5卷 / 4期

基金：

英国医学研究理事会;

关键词：

Attribute Level; Random Component; Full Factorial Design; Discrete Choice Experiment; Short Questionnaire;

D O I：

10.2165/00148365-200605040-00006

中图分类号：

学科分类号：

摘要：

Objective: To identify any differences in response and completion rates across two versions of a questionnaire, in order to determine the trade-off between a potentially higher response rate (from a short questionnaire) and a greater level of information from each respondent (from a long questionnaire). Methods: This was a randomised trial to determine whether response rates and/or results differ between questionnaires containing different numbers of choices: a short version capable of estimating main effects only and a longer version capable of estimating two-way interactions, provided certain assumptions hold. Best-worst scaling was the form of discrete choice experimentation used. Data were collected by post and analysed in terms of response rates, completion rates and differences in mean utilities. Results: Fifty-three percent of individuals approached agreed to take part. From these, the response to the long questionnaire was 83.2% and the short questionnaire was 85.1% (difference 1.9%, 95% CI -7.3, 11.2; p = 0.68). The two versions of the questionnaire provided similar inferences. Discussion/conclusion: This trial indicates that, in a healthcare setting, for this complexity of questionnaire (i.e. four attributes and the best-worst scaling design), the use of 16 scenarios obtained very similar response rates to those obtained using half this number. © 2006 Adis Data Information BV. All rights reserved.

引用

页码：249 / 260

页数：11

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