Reducing required sample size of new studies by effectively using historical data: new methods for evaluating mechanisms, conditions, and alternative explanations

Información del proyecto

Data Synthesis Power

Identificador del acuerdo de subvención: 792119

DOI

10.3030/792119

Proyecto finalizado el 31 Julio 2019

Fecha de la firma de la CE 26 Marzo 2018

Fecha de inicio 1 Septiembre 2018

Fecha de finalización 31 Agosto 2020

Financiado con arreglo a

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Coste total

€ 165 598,80

Aportación de la UE

€ 165 598,80

Coordinado por

UNIVERSITEIT UTRECHT
Netherlands

Objetivo

Scientists, organizations, and governments are moving in the direction of sharing their data. This will lead to an unprecedented amount of available data that researchers could use as prior information in a Bayesian analysis. While Bayesian methods are a promising method for using the growing amount of available information to increase statistical power in research studies, there is a great need for developing guidelines for calibrating existing data to create accurate informative prior distributions.
Bayesian methods that incorporate accurate prior information in the statistical analysis reduce the required sample size of the new study without decreasing the chance of detecting a true effect. However, prior data may be from a different population, measured using different instruments, and/or collected using different experimental procedures than those in the current study. Using the results from a prior study that differs from the current study in any of these respects as prior information in a Bayesian analysis can lead to biased results.
Several promising calibration methods have been proposed for linear regression analysis. In this project I will extend and test these methods to models with third variables that reveal the conditions under which an effect exists (moderators), the mechanism through which one variable affects another (mediators), and variables that might explain an observed effect (confounders).
I will develop guidelines and tools for social science researchers in numerous fields ranging from psychology and pedagogics to education and epidemiology for proper calibration of data from previous studies when evaluating the conditions under which an effect exists, the mechanism through which one variable affects another, and alternative explanations for an observed effect. These calibration methods will reduce required sample sizes in new studies, thus reducing required funds for data collection, and the burden on the researchers and participants.

Ámbito científico (EuroSciVoc)

• ciencias médicas y de la salud › ciencias de la salud › salud pública y medio ambiental › epidemiología
• ciencias naturales › matemáticas › matemáticas aplicadas › estadística y probabilidad › estadística bayesiana
• ciencias sociales › psicología

Palabras clave

• data synthesis methodology
• Bayesian
• small samples
• clinical psychology
• data sharing

Programa(s)

• H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions PROGRAMA PRINCIPAL
  
• H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
  

Tema(s)

• MSCA-IF-2017 - Individual Fellowships
  

Régimen de financiación

MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

Convocatoria de propuestas

H2020-MSCA-IF-2017

Coordinador

UNIVERSITEIT UTRECHT

• Aportación neta de la UEn: € 165 598,80
• Dirección: HEIDELBERGLAAN 8 ; 3584 CS Utrecht ; Países Bajos
• Tipo de actividad: Higher or Secondary Education Establishments
• Coste total: € 165 598,80