A procedure that differentiates unintentional from intentional overdose in opioid abusers

Area of Science:

• Addiction Medicine
• Clinical Psychology
• Public Health

Background:

• Opioid overdose (OD) is a critical public health issue.
• Distinguishing intentional from unintentional OD is vital for appropriate patient care and research.
• Existing assessment methods may lack reliability in differentiating overdose intent.

Purpose of the Study:

• To develop and validate a procedure for assessing unintentional opioid overdose (OD).
• To differentiate unintentional OD from intentional OD in opiate abusers.
• To ensure reliable information collection regarding overdose incidents.

Main Methods:

• A sample of 121 patients in a methadone maintenance program underwent baseline assessment.
• 70 participants completed a follow-up assessment at least 14 days later.
• The study tested the reliability and differentiating ability of OD assessment items.

Main Results:

• The developed procedure reliably differentiated unintentional from intentional OD.
• Questions on OD symptoms were frequently endorsed in unintentional OD cases.
• Reliability for assessing emergency treatment and Narcan administration was outstanding.

Conclusions:

• The validated procedure effectively differentiates unintentional from intentional opioid overdose (OD).
• Follow-up questions on acute overdose treatment are recommended for reliable assessment.
• Symptom-based OD questions are useful for clarifying overdose intent, not confirmation.