Distribution of the types of coercion perceived by patients with substance use disorders. Patients that were involuntarily or voluntarily admitted for substance abuse treatment completed the Perceived Coercion Questionnaire. Perceived coercion was defined as a report of ‘Somewhat Agree’ or ‘Strongly Agree’ on one or more subscales of the questionnaire. Numbers within the bars indicate the percentage that corresponds to only one coloured portion of the bar. IA: involuntarily admitted group; VA: voluntarily admitted group