Drinking Social Norms and Drinking Behaviours: a Multilevel Analysis of 137 Workgroups in 16 Worksites

Tonatiuh Barrientos-Gutierrez ¹, David Gimeno ², Thomas W. Mangione ³, Ronald B. Harrist ¹ and Benjamin C. Amick ^1*

¹ The University of Texas, United States
² University College London, United Kingdom
³ John Snow Inc., United States

^* To whom correspondence should be addressed. E-mail: benjamin.c.amick{at}uth.tmc.edu.

Accepted 9 March 2007

Abstract

Objectives: Previous studies on worksite drinking norms showed individually perceived norms were associated with drinking behaviours. This study examines whether restrictive drinking social norms shared by workgroup membership are associated with decreased heavy drinking, frequent drinking and drinking at work at the worker level. Methods: The sample included 5,338 workers with complete data nested in 137 supervisory workgroups from 16 U.S. worksites. Multilevel models were fitted to examine the association between workgroup drinking norms and heavy drinking, frequent drinking and drinking at work. Results: Multivariate adjusted models showed participants working in workgroups in the most discouraging drinking norms quartile were 45% less likely to be heavy drinkers, 54% less likely to be frequent drinkers and 69% less likely to drink at work than their counterparts in the most encouraging quartile. Conclusions: Strong associations between work-group level restrictive drinking social norms and drinking outcomes suggest public health efforts at reducing drinking and alcohol related injuries, illnesses and diseases should target social interventions at worksites.

Keywords: alcohol, drinking, multilevel, social norms, worksite

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