A menu of potential reinforcers in a methadone maintenance program

Area of Science:

• Addiction Medicine
• Behavioral Psychology
• Psychometrics

Background:

• Methadone maintenance treatment (MMT) is a cornerstone of opioid use disorder management.
• Understanding patient and staff preferences for MMT program privileges is crucial for treatment adherence and program development.
• Existing methods for assessing privilege importance may lack quantitative rigor.

Purpose of the Study:

• To quantitatively measure the relative priority of various methadone program privileges using paired comparisons.
• To compare the preference hierarchies of MMT patients and counselors for program privileges.
• To assess the clinical applicability of paired comparison techniques in addiction treatment settings.

Main Methods:

• Employed paired comparison methodology, presenting 15 MMT privileges in all possible pairs (N=105) to participants.
• Administered the reinforcer menu to two groups: 12 MMT patients and 4 counselors.
• Utilized the law of comparative judgment to convert comparative data into interval scales, establishing a preference continuum.

Main Results:

• Free methadone, increased take-home doses, and free dental services were consistently ranked as the most preferred privileges by both patients and counselors.
• Patients exhibited less differentiation in their preferences compared to counselors.
• Reductions in methadone dosage were identified as the least desirable privilege across both groups.

Conclusions:

• Paired comparison and interval scaling provide a psychometrically sound method for prioritizing MMT privileges.
• Identified key privileges (e.g., free methadone, take-homes) that can be leveraged for behavioral modification in patients with opioid use disorder.
• The paired comparison method offers potential advantages over traditional response scales for assessing treatment-related preferences.