Multilevel mediation modeling in group-based intervention studies

Jennifer L. Krull, David P. MacKinnon

Research output: Contribution to journalArticle

276 Citations (Scopus)

Abstract

This article proposes and evaluates a method to test for mediation in multilevel data sets formed when an intervention administered to intact groups is designed to produce change in individual mediator and outcome variables. Simulated data of this form were used to compare ordinary least squares (OLS) and two multilevel estimators of the mediated effect. OLS and multilevel standard error approximations were also evaluated and recommendations given for optimal estimator choice. These methods were applied to data from an existing substance use intervention to show the impact multilevel mediation modeling can have on the conclusions drawn from real-world evaluation studies.

Original languageEnglish (US)
Pages (from-to)418-444
Number of pages27
JournalEvaluation Review
Volume23
Issue number4
StatePublished - Aug 1999

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mediation
Group
evaluation
Mediation
Modeling
Evaluation
Mediator
Real World
Approximation
Substance Use

ASJC Scopus subject areas

  • Social Sciences(all)

Cite this

Multilevel mediation modeling in group-based intervention studies. / Krull, Jennifer L.; MacKinnon, David P.

In: Evaluation Review, Vol. 23, No. 4, 08.1999, p. 418-444.

Research output: Contribution to journalArticle

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