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Saturday, 18 May 2024, 12:24 PM
Site: iLearn - Lernmanagementsystem der Hochschule Deggendorf
Course: vhb Demo: English Competence and Research Training for Health Professionals_Alt (vhb Demo: English Competence and Research Training for Health Professionals_Alt)
Glossary: Glossary - Research Basics and Terminology
B

Bias

(Last edited: Tuesday, 14 March 2017, 8:55 AM)

  • Systematic error or deviation in results
  • Example: selection bias

Systematic differences in the groups that are compared: group A has 50% more smokers than group B 

→ groups are not comparable


Blinding

(Last edited: Tuesday, 14 March 2017, 8:55 AM)

 

 

  • Process of hiding which comparison group a particular participant belongs to
  • Used to minimize risk of bias
  • Common methodology in clinical trials
  • Types:
  1. Single blind: participants unaware
  2. Double blind: participants+ outcome assessors/ testers unaware
  3. Triple blind: participants+ outcome assessors/ testers+ data analysts unaware