Table

Effect sizes for motivational interviewing according to target behaviour (95% confidence intervals)

Target behaviourMotivational interviewing v placebo or no treatmentMotivational interviewing v active treatments
Alcohol abuse
    Blood alcohol concentration0.53 (0.20 to 0.86)
    Standard ethanol content0.25 (0.13 to 0.37)0.09 (−0.04 to 0.23)
Drug abuse0.56 (0.31 to 0.82)−0.01 (−0.25 to 0.25)
Diet and exercise habits0.53 (0.32 to 0.62)
Smoking0.11 (−0.05 to 0.27)
HIV risk0.01 (−0.29 to 0.31)