The dynamic relationship between social norms and behaviors: the results of an HIV prevention network intervention for injection drug users

Aims Social norms are a key source of influence on health behaviors. This study examined changes in social norms and relationships between HIV injection risk behaviors and social norms among injection drug users ( IDUs ) involved in an experimental intervention. Design Randomized clinical trial. Setting An HIV P revention T rials N etwork study, P hiladelphia, USA . Participants IDUs , called indexes, and their social network members, who were...