Mediator and moderator variables in nursing research: Conceptual and statistical differences

Jill Bennett

Research output: Contribution to journalArticle

158 Citations (Scopus)

Abstract

Mediators and moderators are variables that affect the association between an independent variable and an outcome variable. Mediators provide additional information about how or why two variables are strongly associated. In contrast, moderators explain the circumstances that cause a weak or ambiguous association between two variables that were expected to have a strong relationship. Mediators and moderators are often overlooked in research designs, or the terms are used incorrectly. This article summarizes the conceptual differences between mediators and moderators. The statistical analysis of moderators and mediators in multiple regression is briefly described and two examples are presented.

Original languageEnglish (US)
Pages (from-to)415-420
Number of pages6
JournalResearch in Nursing and Health
Volume23
Issue number5
StatePublished - Oct 2000
Externally publishedYes

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Epidemiologic Effect Modifiers
Nursing Research
Research Design

Keywords

  • Data analysis
  • Mediator
  • Moderator

ASJC Scopus subject areas

  • Nursing(all)

Cite this

Mediator and moderator variables in nursing research : Conceptual and statistical differences. / Bennett, Jill.

In: Research in Nursing and Health, Vol. 23, No. 5, 10.2000, p. 415-420.

Research output: Contribution to journalArticle

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