Polysubstance and Single Substance Use Among Adults: Is Gambling a Differentiating Factor?

Area of Science:

• Addiction research
• Public health
• Behavioral science

Background:

• Polysubstance use is linked to poorer treatment outcomes.
• Limited research exists on the connection between gambling behaviors and polysubstance use.

Purpose of the Study:

• To examine demographic and behavioral factors, including gambling, in relation to polysubstance use.
• To identify attributes associated with polysubstance use compared to single substance use or no substance use.

Main Methods:

• Utilized data from a population-based sample of 3,843 adults in Iowa.
• Employed multinomial regression with a logit link to model polysubstance use patterns.

Main Results:

• Multiple types of gambling activities significantly differentiated polysubstance use from single substance use.
• Factors like lower education, unemployment, and lack of health coverage were associated with polysubstance use.
• Polysubstance use was more frequent in males, younger adults, never-married individuals, those with lower quality of life, and those experiencing sadness or hopelessness.

Conclusions:

• A strong association exists between the breadth of gambling activities and polysubstance use.
• Findings can inform prevention and harm-reduction strategies for polysubstance users.
• Intervention strategies should consider co-occurring gambling behaviors in adults using multiple substances.