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Contingency Management

Contingency Management.

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Contingency Management

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  1. Contingency Management • Contingency management (CM) refers to the systematic application of basic principles delineated by workers in the field of the Experimental Analysis of Behavior to assist individuals in changing their behavior. Primary emphasis is placed on the use of reinforcement and punishment to alter an individual’s day-to-day behavior.

  2. Reinforcers in Health Care • Mammography screening • Child immunization

  3. BREAST CANCER Mammography Screening Recommendation for Women Ages 50 and older: ANNUAL MAMMOGRAM With physician advice alone, few women receive an annual mammogram (Stoner et al., 1998)

  4. Mammogram Compliance Rate of Compliance Rates of mammogram screening were 2.5 times higher for the incentive as compared to the control women. (Stoner et al., 1998)

  5. In 1989-91, immunization rates were as low as 23% for two-year olds in the Chicago area. Childhood Immunizations

  6. Immunization Rates Rate Rates increased when WIC food vouchers were given to those who had their children immunized. (Hoekstra et al., 1998)

  7. How does CM work in treating drug abuse? • Provide alternative sources of reinforcement.

  8. Nader & Woolverton, 1991

  9. Higgins, Roll, & Bickel, 1996

  10. Roll, & Newton, 2007

  11. CM has been used to treat a number of types of drug abuse Opioids Benzodiazepines Marijuana Methamphetamine Nicotine (tobacco smoking) Alcohol Cocaine

  12. Treatment of Cocaine Dependence in a Drug-Free ClinicHiggins et al., 1994 • Contingency Management • Psychosocial treatment • Urine testing 2x/week • Vouchers, escalating • Control Treatment • Psychosocial treatment • Urine testing 2x/week • No vouchers

  13. Treatment of Cocaine Dependence Retained Through Study Higgins et al., 1994

  14. Contingency Management 3x weekly urine testing received vouchers only if urine samples were cocaine negative Control Group 3x weekly urine testing received vouchers regardless of urine test results Treatment of Cocaine Abuse in Methadone PatientsSilverman et al., 1996

  15. Treatment of Cocaine Use in Methadone Patients Retained Through Study Silverman et al., 1996

  16. A recent meta-analysis reports that CM results in a successful treatment episode 61% of the time while other treatments with which it has been compared result in a successful treatment episode 39% of the time (Prendergast, Podus, Finney, Greenwell & Roll, 2006)

  17. CTN 006 & 007

  18. Random Assignment • • Standard care • • Standard care with • prize CM • 3-month evaluation

  19. Draws escalate with stimulant-free test results 5 4 # Draws 3 2 1 Weeks Drug Free

  20. Total earnings On average, patients could earn up to $400 in prizes if they maintained abstinence for 12 weeks and submitted all 24 negative samples. Actual earnings were $203 in psychosocial clinics and $130 in methadone clinics (e.g., half possible or less).

  21. CTN 006

  22. Results from psychosocial clinics Arapaho-Douglas (Rocky Mountain) Charleston (South Carolina) Circle Part (South Carolina) Crossroads (Rocky Mountain) Harbel (Mid Atlantic) Jefferson (Delaware Valley) Guenster LMG (New England) Matrix (Pacific Region)

  23. Results p<.05 p<.05 Petry et al. (2005). Archives of General Psychiatry

  24. CM + TAUTAU

  25. Comparing Cocaine and Methamphetamine Treatment Outcomes

  26. Total Number of Negative Urines

  27. Longest Duration of Abstinence

  28. CTN 007

  29. Eligible patients • Stimulant abusers • (cocaine or methamphetamine) • enrolled in methadone or • outpatient psychosocial treatment

  30. Participating methadone clinics Act II (Delaware Valley) Aegis (Pacific Region) Glenwood (Mid Atlantic) Greenwich (New York) LESC (New York) Oasis (Mid Atlantic)

  31. CTN methadone studies p<.05 Peirce et al. (2006). Archives of General Psychiatry.

  32. CMDE (N=120) • TAU (16 weeks of CBT) • TAU + 4 weeks of CM • TAU + 8 weeks of CM • TAU + 16 weeks of CM

  33. n.s.

  34. LTBC (N=118) • TAU (16 weeks of CBT) • Continuous = TAU + 12 weeks of CM FR1 • Predictable = TAU + 12 weeks of CM FR3 • Unpredictable = TAU + 12 weeks of CM VR3

  35. Procedures • Thrice weekly counseling and urine collection • Negative urine resulted in delivery of a voucher utilizing an escalating scale of reinforcement procedure

  36. .

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