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Related Concept Videos

Regression Toward the Mean01:52

Regression Toward the Mean

Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when researchers try to extrapolate results...
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Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

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Framing Effects03:26

Framing Effects

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Pre-Procedural Guidelines for Assessing Blood Pressure01:10

Pre-Procedural Guidelines for Assessing Blood Pressure

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Guidelines for Writing Outcome01:11

Guidelines for Writing Outcome

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Related Experiment Video

Updated: May 27, 2026

Measuring the Subjective Value of Risky and Ambiguous Options using Experimental Economics and Functional MRI Methods
13:04

Measuring the Subjective Value of Risky and Ambiguous Options using Experimental Economics and Functional MRI Methods

Published on: September 19, 2012

Obstetrical outcome valuations by patients, professionals, and laypersons: differences within and between groups

Denise Bijlenga1, Erwin Birnie, Ben Wj Mol

  • 1Dept, of Social Medicine, Academic Medical Centre - University of Amsterdam, The Netherlands. denise.bijlenga@gmail.com

BMC Pregnancy and Childbirth
|November 15, 2011
PubMed
Summary

Patient and layperson preferences for obstetric care outcomes differ. Laypersons should use time trade-off (TTO) or discrete choice experimentation (DCE); patients should use visual analogue scale (VAS) or TTO for decision-making.

Related Experiment Videos

Last Updated: May 27, 2026

Measuring the Subjective Value of Risky and Ambiguous Options using Experimental Economics and Functional MRI Methods
13:04

Measuring the Subjective Value of Risky and Ambiguous Options using Experimental Economics and Functional MRI Methods

Published on: September 19, 2012

Area of Science:

  • Health economics
  • Decision analysis
  • Maternal-fetal medicine

Background:

  • Patient preferences, healthcare professional insights, and layperson views inform healthcare decisions.
  • Comparing these perspectives is crucial for patient-centered obstetric care.
  • Valuing complex obstetric health states requires understanding diverse viewpoints.

Purpose of the Study:

  • To compare health state valuations between patients, obstetrical care professionals, and laypersons.
  • To evaluate different valuation methods (VAS, TTO, DCE) in complex obstetric scenarios.
  • To assess the consistency of valuation patterns across groups and methods.

Main Methods:

  • Three groups (patients, professionals, laypersons) valued obstetric vignettes using VAS, TTO, and DCE.
  • Vignettes included five attributes: antepartum maternal health, diagnosis-delivery time, delivery process, maternal outcome, and neonatal outcome.
  • Reliability (test-retest, within-group) and consistency were assessed using Generalization theory.

Main Results:

  • Test-retest reliability varied by method (VAS > TTO > DCE), while within-group reliability was highest for VAS across all groups.
  • Method effects were more significant than group effects on valuations.
  • Valuation differences between groups were most pronounced in severe health states.

Conclusions:

  • Visual analogue scale (VAS) demonstrated highest reliability across groups.
  • Time trade-off (TTO) and discrete choice experimentation (DCE) are recommended for laypersons.
  • Patients are advised to use VAS or TTO for decision-making in obstetric care.