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

Jill A. Bennett

    Research output: Contribution to journalArticle

    167 Scopus citations

    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
    DOIs
    StatePublished - Oct 2000

    Keywords

    • Data analysis
    • Mediator
    • Moderator

    ASJC Scopus subject areas

    • Nursing(all)

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