Age at onset typology in opioid dependent men: an exploratory study

Area of Science:

• Addiction Research
• Clinical Psychology
• Psychiatry

Background:

• Opioid dependence is a significant public health issue.
• Understanding subtypes of opioid dependence can inform treatment strategies.
• Age at onset is a potential factor differentiating clinical presentations.

Purpose of the Study:

• To apply an age at onset typology to individuals diagnosed with opioid dependence (ICD-10).
• To identify differences between early-onset and late-onset opioid dependence groups.
• To explore the feasibility of this typology in clinical settings.

Main Methods:

• Study included 80 men seeking treatment for opioid dependence.
• Utilized socio-demographic, clinical profiles, and validated questionnaires (Severity of Opioid Dependence, Sensation Seeking, MPQ, Family History).
• Defined early-onset (≤20/21 years) versus late-onset using two methods.

Main Results:

• Early-onset opioid dependence was associated with younger age, urban background, unmarried status, and oral opioid use.
• Early-onset group showed higher lifetime use/dependence of sedatives, earlier sedative/tobacco onset, and greater psychopathology (MPQ).
• Trends suggested less alcohol use, higher opioid severity, more legal/fewer social complications, and higher sensation seeking in the early-onset group.

Conclusions:

• Age at onset typology is feasible for opioid dependence.
• Early-onset opioid dependence presents with a distinct clinical profile.
• Findings suggest similarities to age-based typologies in alcoholism.