Comparing stigmatising attitudes towards people with substance use disorders between the general public, GPs, mental health and addiction specialists and clients.

Background: Substance use disorders (SUDs) are among the most severely stigmatised conditions; however, little is known about the nature of these stigmatising attitudes.

Aims: To assess and compare stigmatising attitudes towards persons with SUDs among different stakeholders: general public, general practitioners (GPs), mental health and addiction specialists, and clients in treatment for substance abuse.

Methods: Cross-sectional study (N = 3,326) in which stereotypical beliefs, attribution beliefs (e.