Term: Interaction Effect

Glossary Definition

Last Updated: 2006-10-20

Definition:

"The joint effect of two or more independent variables on a dependent variable. Interaction effects occur when independent variables not only have separate effects but also have combined effects on a dependent variable. Put somewhat differently, interaction effects occur when the relation between two variables differs depending on the value of another variable." (Vogt, 1993).

Related terms 

• Covariate
• Main Effect

References 

• Vogt W Paul. Dictionary of Statistics and Methodology: A Nontechnical Guide for the Social Sciences. Newbury Park, California: Sage Publications; 1993.(View)

Term used in 

• Chartier M, Finlayson G, Prior H, McGowan K, Chen H, de Rocquigny J, Walld R, Gousseau M. Health and Healthcare Utilization of Francophones in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] (View)
• Lix L, Yogendran M, Burchill C, Metge C, McKeen N, Moore D, Bond R. Defining and Validating Chronic Diseases: An Administrative Data Approach. Winnipeg, MB: Manitoba Centre for Health Policy, 2006. [Report] [Summary] (View)
• Martens P, Fransoo R, The Need to Know Team, Burland E, Prior H, Burchill C, Romphf L, Chateau D, Bailly A, Ouelette C. What Works? A First Look at Evaluating Manitoba's Regional Health Programs and Policies at the Population Level. Winnipeg, MB: Manitoba Centre for Health Policy, 2008. [Report] [Summary] [Additional Materials] (View)