Effect of Level Overlap and Color Coding on Attribute Non-Attendance in Discrete Choice Experiments

Value in Health : the Journal of the International Society for Pharmacoeconomics and Outcomes Research
Marcel F JonkerElly A Stolk

Abstract

The aim of this study was to test the hypothesis that level overlap and color coding can mitigate or even preclude the occurrence of attribute nonattendance in discrete choice experiments. A randomized controlled experiment with five experimental study arms was designed to investigate the independent and combined impact of level overlap and color coding on respondents' attribute nonattendance. The systematic differences between the study arms allowed for a direct comparison of observed dropout rates and estimates of the average number of attributes attended to by respondents, which were obtained by using augmented mixed logit models that explicitly incorporated attribute non-attendance. In the base-case study arm without level overlap or color coding, the observed dropout rate was 14%, and respondents attended, on average, only two out of five attributes. The independent introduction of both level overlap and color coding reduced the dropout rate to 10% and increased attribute attendance to three attributes. The combination of level overlap and color coding, however, was most effective: it reduced the dropout rate to 8% and improved attribute attendance to four out of five attributes. The latter essentially removes the need to ...Continue Reading

Citations

Nov 6, 2018·PharmacoEconomics·Vikas SoekhaiCaroline M Vass
Feb 18, 2020·Medical Decision Making : an International Journal of the Society for Medical Decision Making·Marcel F JonkerSchiffon L Wong
Nov 18, 2018·The Patient·Richard NormanBrendan Mulhern
Jul 17, 2020·Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation·Daphne C VoormolenUNKNOWN CENTER-TBI participants and investigators
May 31, 2019·Medical Decision Making : an International Journal of the Society for Medical Decision Making·Lucas M A GoossensUNKNOWN research team that developed the ABC tool
Aug 1, 2019·The Patient·John D Hartman, Benjamin M Craig
Oct 27, 2020·Clinical and Translational Gastroenterology·Yonne Peters, Peter D Siersema
Apr 6, 2021·Medical Decision Making : an International Journal of the Society for Medical Decision Making·Dennis A RevickiRichard Norman
May 12, 2020·Value in Health : the Journal of the International Society for Pharmacoeconomics and Outcomes Research·Richard Norman, Jan Abel Olsen
May 6, 2021·The Patient·Hannah CollacottSebastian Heidenreich

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