Colorado State Epidemiological Outcomes Workgroup (SEOW) published this four-part document as an overview of opioid, marijuana, and alcohol consumption and consequences in Colorado. Each substance is presented in its own profile, with a Demographics profile provided for additional state context. These epidemiological profiles were designed to be readily usable to all people working in substance use prevention. They cross many data sources and aim...

Polysubstance use is defined broadly as using two or more psychoactive substances. Simultaneous polysubstance use refers to the concurrent use of multiple substances. Separate polysubstance use refers to the use of muliple substances over a period, such as 12 months or the past 30 days. Nationally and in Colorado, alcohol and marijuana are the substances most commonly used in the past month. Overdose deaths due to methamphetamine and heroin were the...