Effects of a Brief Intervention for Substance Use on XXXX Smoking and Family Relationship Functioning in @entity161 and Related Psychoses: A Randomised Controlled Trial.

@entity1 @entity286 @entity167 @entity914 @entity161 @entity716
Surveys indicate that substance use is prevalent in populations with @entity161 . Family members may be able to support brief interventions (BI). We conducted a randomised controlled trial with 6-month follow-up among adult @entity1 with @entity161 and related @entity914 who were referred to two hospitals in southern Thailand. @entity1 with @entity716 were screened using the @entity167 Smoking and Substance Involvement Screening Test (ASSIST). 169 @entity1 (all at moderate substance risk on the ASSIST) were randomised to receive simple advice (the clinics' treatment-as-usual, TAU condition), or single-session brief intervention (BI), or a single-session BI with family support (BI-FS). Given observed substance use, the primary outcome was the ASSIST @entity286 smoking involvement score (SIS). Secondary outcomes were cigarettes smoked per day, change motivation (Taking Steps from the Stages of Change and Treatment Eagerness Scale), and DSM-IV Axis V Global Assessment of Relational Functioning (GARF). At follow-up, BI-FS @entity1 reported a lower SIS (mean difference, -2.82, 95% confidence interval [CI] -4.84 to -0.81; Glass' effect size [  ]=0.57, 95% CI 0.19 to 0.95), smoked fewer cigarettes per day (mean difference -3.10, 95% CI -5.45 to -0.74;   =0.56, 95% CI 0.18 to 0.94), had greater change motivation (mean difference 3.05, 95% CI 0.54 to 5.57;   =0.41, 95% CI 0.03 to 0.79) and GARF (mean difference 6.75, 95% CI 1.57 to 11.93;   =0.54, 95% CI 0.16 to 0.92). The BI-FS group also had better relational functioning in comparison to those receiving BI only (mean difference 5.44, 95% CI 0.20 to 10.67;   =0.46, 95% CI 0.08 to 0.84). In @entity161 and related @entity914 , a brief intervention supported by a family member reduces smoking involvement, cigarette smoking intensity, and increases change motivation and relational functioning.
