Summary of Evidence for Substance Use

Question 1

Magill & Ray (2009) - CBT - Meta analysis

Answer 1

Interventions
- CBT

Findings
- CBT demonstrated a small but statistically insignificant effect over TAU with the exception of marijuana abuse.

Question 2

Stein et al (2009) - CBT (MI)

Answer 2

Interventions
- CBT (MI)

Findings
- Motivational intervention was more effective at reducing cocaine use than the assessment only control condition among those using cocaine at least 15 days a month

Question 3

Malat et al (2008) - IPT

Answer 3

Interventions
- IPT

Findings
- At post treatment the treatment group showed statistically significant improvement in number of drinking days, number of heavy drinking days and psychological functioning.

• At 8 month follow up improvements were maintained on a number of heavy drinking days and psychological functioning
• Reductions in reported interpersonal problems across the pre-post assessment period were not significant.