The investigators will recruit adolescents with alcohol or cannabis abuse and clinically significant depression. All participants will receive 12 sessions of an evidence-based treatment for alcohol abuse, Motivation Enhancement Therapy/Cognitive Behavior Therapy-12, over 12 to 14 weeks. Those who are still depressed after 4 weeks will be randomized to receive treatment augmentation with either an integrated cognitive behavior therapy for depression, delivered by their study therapist, or depression treatment-as-usual in the community. The study hypothesis is that integrated depression treatment will surpass community treatment-as-usual in efficacy.
Alcohol and other substance use disorders (AOSUDs), primarily cannabis use disorders, continue to be a significant public health concern among American adolescents. AOSUDs are commonly accompanied by co-occurring psychiatric disorders including depression. This comorbidity has been associated with increased severity of AOSUD, earlier treatment termination, poorer outcomes, and increased suicidal risk. Presently there is neither a consensus nor a standard, evidence-based intervention to address the need for an effective and feasible treatment for both disorders. However, cognitive behavior therapy (CBT) has been found to be effective for each of these disorders, separately. In addition, in some, but not all, adolescents with both disorders, depression appears to respond rapidly to CBT that targets only alcohol or substance abuse. This suggests that early depression responders (EDRs) may not need additional treatment that targets depression directly, unlike their non-early responding (NEDR) counterparts. However, no studies have compared longer term outcomes of adolescent EDRs to NEDRs. Moreover, no randomized, controlled studies have tested the hypothesis that an integrated CBT intervention for co-occurring AOSUD and depression will be effective for both disorders, in NEDR adolescents. In this two-site study, submitted in response to PA: PAS-10-251, we will recruit 170 eligible adolescents (102 at the University of Connecticut and 68 at Duke University), ages 13 years to 21 years-11 months, with alcohol or cannabis use disorders and clinically significant depression. All subjects will receive 12 sessions of Motivation Enhancement Therapy/Cognitive Behavior Therapy (MET/CBT-12), a standard, evidence-based intervention for alcohol or drug abuse over 12 to 14 weeks. After four weeks, NEDR adolescents will be randomized to depression treatment augmentation, either with seven sessions of CBT (CBT-D), integrated with MET/CBT-12, or with enhanced depression-treatment-as-usual in the community (D-ETAU). We estimate that 120 adolescents will be randomized; we will stratify randomization on gender, age, and presence/absence of a Major Depressive Episode. We will assess all 170 participants at baseline, weeks 4, 9, and 14 (after treatment), and at 3-, 6-, and 9-month follow-up. The first aim of this study is to describe the percentage of depressed AOSUD adolescents who demonstrate EDR during alcohol or cannabis abuse treatment alone, examine EDR durability and EDR predictors. The second and third aims test the hypotheses that, for NEDR teens, an integrated treatment augmentation (CBT-D) will lead to better depression and alcohol or cannabis outcomes, respectively, than augmentation with D-ETAU. We will compare outcomes of all three groups (EDRs; and NEDRs in each augmentation), on alcohol use, depressive symptoms, alcohol- or cannabis-related functional impairment, maintenance of alcohol or cannabis treatment gains, and depression remission rates over time, and will analyze the temporal ordering of changes in alcohol or cannabis use and depression during and after treatment. This is the first study to test an adaptive treatment model with depressed alcohol or cannabis use disorder youths, and thus has significant potential to guide clinical practice.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
103
Two sessions of motivation enhancement therapy followed by 10 sessions of cognitive behavior therapy targeting alcohol or cannabis abuse. These 12 sessions will be delivered over 12 to 14 weeks.
CBT-D consists of seven weekly sessions of cognitive behavior therapy targeting depression.
D-TAU is treatment as usual in the community, targeting depression. It may consist of medication and/or behavioral intervention.
University of Connecticut Health Center
Farmington, Connecticut, United States
Duke Child and Family Study Center
Durham, North Carolina, United States
Alcohol use frequency assessed with the Alcohol Consumption Questionnaire
At every assessment point (baseline, weeks 4, 9, and 14 \[end of treatment\]; and then 3, 6, and 9 months after treatment ends, adolescents will be interviewed by an independent evaluator using the Alcohol Consumption Questionnaire regarding alcohol use frequency over the past three months (baseline, and months 3, 6, and 9) or past month (weeks 4, 9, and 14).
Time frame: Change from baseline to week 14; change from baseline to 9 months after treatment ends
Severity of depression, as measured on the Children's Depression Rating Scale-Revised (CDRS-R)
At every assessment point (baseline, weeks 4, 9, and 14 \[end of treatment\] and then 3, 6, and 9 months after treatment ends, adolescents and parents will be interviewed by an independent evaluator using the CDRS-R, with reference to the adolescent's depression symptoms during the past week. The week 4 assessment determines whether the adolescent is an early responder on depression, defined as having a 50% reduction in CDRS-R score. One item assesses suicidal thinking or behavior.
Time frame: Change from baseline to week 4; Change from baseline to week 14; Change from baseline to 9 months after treatment ends
Alcohol use quantity assessed with the Alcohol Consumption Questionnaire
At every assessment point (baseline, weeks 4, 9, and 14 \[end of treatment\]; and then 3, 6, and 9 months after treatment ends, adolescents will be interviewed by an independent evaluator regarding alcohol use quantity over the past three months (baseline; months 3, 6, and 9) or past month (weeks 4, 9, and 14), using the Alcohol Consumption Questionnaire.
Time frame: Change from baseline to week 14; Change from baseline to 9 months after treatment ends
Cannabis use frequency assessed with the Drug Checklist
At every assessment point (baseline, weeks 4, 9, and 14 \[end of treatment\]; and then 3, 6, and 9 months after treatment ends, adolescents will be interviewed by an independent evaluator regarding cannabis use frequency over the past three months (baseline; months 3, 6, and 9) or past month (weeks 4, 9, and 14), using the Drug Checklist.
Time frame: Change from baseline to week 14; Change from baseline to 9 months after treatment ends
Diagnosis
At baseline, week 14 (end of treatment), and 9 months after treatment, the adolescent will complete the Voice DISC diagnostic interview to determine whether he or she continues to meet criteria for an alcohol or cannabis use disorder
Time frame: Baseline to Week 14; baseline to 9 Months after treatment ends
Teen-Addiction Severity Index (T-ASI)
The Independent Evaluator will complete the T-ASI with the adolescent and parent at every assessment point (baseline, week 4, week 9, week 14, and then 3, 6, and 9 months after treatment ends) to determine whether there are changes in substance-use-related functional problems
Time frame: Baseline to Week 14; baseline to 9 months after treatment ends
Suicidal Ideation Questionnaire-Jr. High Version (SIQ-Jr)
Adolescents will complete this self-report form at every assessment point (baseline, week 4, week, 9, week 14; and then 3, 6, and 9 months after treatment ends) to determine if there are significant reductions in suicidal ideation
Time frame: Baseline to Week 14; baseline to 9 months after treatment ends
Children's Global Assessment of Functioning (CGAS)
The Independent Evaluator will make this single item rating of global functioning at every assessment point (baseline, week 4, week 9, week 14, and then 3, 6, and 9 months after treatment ends) to determine if there are significant improvements in adolescent's overall functioning
Time frame: Baseline to Week 14; baseline to 9 months after treatment ends
Clinical Global Impression-Improvement in Depression (CGI-I)
At every assessment point except baseline (at week 4, week 9, week 14, and then at 3, 6, and 9 months after treatment ends), the independent evaluator will rate the adolescent's improvement since baseline in the domain of depression, using CDRS-R scores as the reference. The CGI-I score determines whether the adolescent is a partial or full responder, or a non-responder to treatment.
Time frame: Baseline to Week 14; baseline to 9 months after treatment ends
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