An estimated 21.5 million U.S. adults experienced co-occurring mental health and substance use disorders (SUDs), hereinafter referred to as co-occurring disorders, in the past year, yet 40% received no treatment for either condition (Substance Abuse
and Mental Health Services Administration [SAMHSA], 2023). Despite clear recommendations for integrated care, most people still receive treatment for only one condition (71.6% of adolescents and 59.1% of adults) in the past year (SAMHSA,
2023). Historically, mental health and SUD services have been delivered separately, leading to fragmented care, inconsistent treatment messages, and poor coordination among providers, factors that increase the risk of relapse and dropout of
treatment (Padwa et al., 2015; Yule & Kelly, 2019). Integrated care models, which aim to address both conditions through coordinated, multidisciplinary teams, offer a more comprehensive approach.
In the attached literature resources, we review various studies across treatment and cultural contexts to uncover information about effectiveness and outcomes of Integrated Treatment Models for Co-occurring Disorders.