Tracy R. G. Gladstone

Prevention of depression in at-risk adolescents: a randomized controlled trial.

CONTEXT Adolescent offspring of depressed parents are at markedly increased risk of developing depressive disorders. Although some smaller targeted prevention trials have found that depression risk can be reduced, these results have yet to be replicated and extended to large-scale, at-risk populations in different settings. OBJECTIVE To determine the effects of a group cognitive behavioral (CB) prevention program compared with usual care in preventing the onset of depression. DESIGN, SETTING, AND PARTICIPANTS A multicenter randomized controlled trial conducted in 4 US cities in which 316 adolescent (aged 13-17 years) offspring of parents with current or prior depressive disorders were recruited from August 2003 through February 2006. Adolescents had a past history of depression, current elevated but subdiagnostic depressive symptoms, or both. Assessments were conducted at baseline, after the 8-week intervention, and after the 6-month continuation phase. INTERVENTION Adolescents were randomly assigned to the CB prevention program consisting of 8 weekly, 90-minute group sessions followed by 6 monthly continuation sessions or assigned to receive usual care alone. MAIN OUTCOME MEASURE Rate and hazard ratio (HR) of a probable or definite depressive episode (ie, depressive symptom rating score of > or = 4) for at least 2 weeks as diagnosed by clinical interviewers. RESULTS Through the postcontinuation session follow-up, the rate and HR of incident depressive episodes were lower for those in the CB prevention program than for those in usual care (21.4% vs 32.7%; HR, 0.63; 95% confidence interval [CI], 0.40-0.98). Adolescents in the CB prevention program also showed significantly greater improvement in self-reported depressive symptoms than those in usual care (coefficient, -1.1; z = -2.2; P = .03). Current parental depression at baseline moderated intervention effects (HR, 5.98; 95% CI, 2.29-15.58; P = .001). Among adolescents whose parents were not depressed at baseline, the CB prevention program was more effective in preventing onset of depression than usual care (11.7% vs 40.5%; HR, 0.24; 95% CI, 0.11-0.50), whereas for adolescents with a currently depressed parent, the CB prevention program was not more effective than usual care in preventing incident depression (31.2% vs 24.3%; HR, 1.43; 95% CI, 0.76-2.67). CONCLUSION The CB prevention program had a significant prevention effect through the 9-month follow-up period based on both clinical diagnoses and self-reported depressive symptoms, but this effect was not evident for adolescents with a currently depressed parent. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00073671.

Depression and attributions in children and adolescents: A meta-analytic review

This article presents a meta-analytic review of the association between attributional styles and depressive symptoms in children and adolescents. In 28 studies involving 7500 subjects, the correlations were consistent with those predicted by the reformulated learned helplessness model of depression. For negative outcomes, attributions along the internal, stable, and global dimensions were associated positively with depression. Conversely, higher levels of depressive symptoms were related to more external, unstable, and specific attributions for positive events. Additionally, overall composite maladaptive attributional patterns for positive and negative events were correlated with higher levels of depressive symptoms in youth. Effect sizes for these associations ranged from moderate to large (Cohen, 1977). Findings from the significance tests of the combined results support the theory. A large number of unretrieved studies revealing null effects would be needed to invalidate these findings.

Long-term effects from a randomized trial of two public health preventive interventions for parental depression.

This article presents long-term effects of a randomized trial evaluating 2 standardized, manual-based prevention strategies for families with parental mood disorder: informational lectures and a brief, clinician-based approach including child assessment and a family meeting. A sample of 105 families, in which at least 1 parent suffered from a mood disorder and at least 1 nondepressed child was within the 8- to 15-year age range, was recruited. Parents and children were assessed separately at baseline and every 9 to 12 months thereafter on behavioral functioning, psychopathology, and response to intervention. Both interventions produced sustained effects through the 6th assessment point, approximately 4.5 years after enrollment, with relatively small sample loss of families (<14%). Clinician-based families had significantly more gains in parental child-related behaviors and attitudes and in child-reported understanding of parental disorder. Child and parent family functioning increased for both groups and internalizing symptoms decreased for both groups, with no significant group differences. These findings demonstrate that brief, family-centered preventive interventions for parental depression may contribute to long-term, sustained improvements in family functioning.

Randomized clinical trial of an Internet-based depression prevention program for adolescents (Project CATCH-IT) in primary care: 12-week outcomes.

Objective: The authors sought to evaluate 2 approaches with varying time and complexity in engaging adolescents with an Internet-based preventive intervention for depression in primary care. The authors conducted a randomized controlled trial comparing primary care physician motivational interview (MI, 5–10 minutes) + Internet program versus brief advice (BA, 1–2 minutes) + Internet program. Setting: Adolescent primary care patients in the United States, aged 14 to 21 years. Participants: Eighty-four individuals (40% non-white) at increased risk for depressive disorders (subthreshold depressed mood >3–4 weeks) were randomly assigned to either the MI group (n = 43) or the BA group (n = 40). Main Outcome Measures: Patient Health Questionnaire-Adolescent and Center for Epidemiologic Studies Depression Scale (CES–D). Results: Both groups substantially engaged the Internet site (MI, 90.7% vs BA 77.5%). For both groups, CES–D-10 scores declined (MI, 24.0 to 17.0, p < .001; BA, 25.2 to 15.5, p < .001). The percentage of those with clinically significant depression symptoms based on CES–D-10 scores declined in both groups from baseline to 12 weeks, (MI, 52% to 12%, p < .001; BA, 50% to 15%, p < .001). The MI group demonstrated declines in self-harm thoughts and hopelessness and was significantly less likely than the BA group to experience a depressive episode (4.65% vs 22.5%, p = .023) or to report hopelessness (MI group of 2% vs 15% for the BA group, p = .044) by 12 weeks. Conclusions: An Internet-based prevention program in primary care is associated with declines in depressed mood and the likelihood of having clinical depression symptom levels in both groups. Motivational interviewing in combination with an Internet behavior change program may reduce the likelihood of experiencing a depressive episode and hopelessness.

Transmission and Prevention of Mood Disorders Among Children of Affectively Ill Parents: A Review

OBJECTIVE To provide a conceptual review of the literature on children of depressed parents over the past 12 years. METHOD This selective review focused on published studies that delineate the diagnosis of depression in parents, have large samples, describe children 6 to 17 years old, and are methodologically rigorous. The review emphasized conceptual advances and major progress since 1998. Recent efforts in prevention research were discussed, gaps in the existing literature were noted, and directions for targeted research on children of depressed parents were highlighted. RESULTS Over the past 12 years there has been considerable progress in delineating the gene-by-environment interplay in determining the range of outcomes in children. In addition, progress has been made in identifying risk mechanisms and moderators that underlie the transmission of disorder and in developing effective prevention programs. CONCLUSIONS This review highlights directions for further research, including different areas affected by parental depression in parents and children, and in understanding the underlying mechanisms involved in the intergenerational transmission of depression, so that preventive and treatment efforts can be tailored effectively.

The prevention of depression in children and adolescents: a review.

Objective: To review the recent literature on the prevention of clinical diagnoses of depression in children and adolescents. Method: Several preventive intervention programs targeting depressive diagnoses in youth were reviewed. These programs based their prevention strategies on cognitive-behavioural and (or) interpersonal approaches, which have been found to be helpful in the treatment of depression. In addition, family-based prevention strategies were reviewed. Also, nonspecific risk factors for youth depression, including poverty and child maltreatment, were discussed as important considerations in prevention programs targeting youth depression. Results: In general, successful prevention programs targeting youth depression are based on evidence-based treatment programs for youth depression, structured and outlined in manuals, involve careful training of personnel implementing the protocols, and include assessment of fidelity to the intervention protocols. The programs were consistent with cognitive-behavioural and (or) interpersonal psychotherapy traditions. Overall, it appears that there is reason for hope regarding the role of interventions in preventing depressive disorders in youth. Conclusions: Several new directions for future research on the prevention of depression in youth were outlined. Future research is needed to establish an empirical base for the prevention of depression in high-risk youth and should: focus on targeted and indicated prevention approaches, attend to moderators of intervention effects, include approaches that aim to enhance the family environment, attend to nonspecific risk factors for disorder, and focus on the dissemination phase of prevention research.

Prevention of childhood depression: recent findings and future prospects.

Traditionally, research on childhood mood disorders has focused on clinical trials and longitudinal course and outcome studies, rather than on prevention. Recently, however, advances in the design, methodology, and evaluation of prevention approaches and progress in understanding what factors predispose children to depression have made possible the development of theoretically driven, empirically justified approaches to the prevention of depression in youngsters who are at high risk, either because of elevated symptom levels or parental mood disorder. In this review, we outline recent empirical findings on risk factors for depression in nonreferred samples of youngsters and also in children of depressed parents. Additionally, we review three trials of preventive interventions for childhood depression that yield promising initial findings. We emphasize the need to understand both risks for depression and factors that protect youngsters at risk from succumbing to depression in guiding the development of prevention programs. We also argue that consideration of prevention of depression requires addressing broader social adversity influences that lead to poor mental health outcomes in children, even beyond the effects of parental mood disorder. We conclude with an emphasis on the importance of a developmental-transactional perspective that highlights opportunities for intervention at different points across the lifespan.

Sex Differences, Attributional Style, and Depressive Symptoms Among Adolescents

This study examined attributional style, sex, and depressive symptoms and diagnosis in high school students. The results revealed that (1) for females and males, higher levels of depressive symptoms correlated with a more depressive attributional style; (2) females and males who met diagnostic criteria for a current depressive disorder evidenced more depres-sogenic attributions than psychiatric controls, and never and past depressed adolescents; (3) although no sex differences in terms of attributional patterns for positive events, negative events, or for positive and negative events combined emerged, sex differences were revealed on a number of dimensional scores; (4) across the Childrens Attributional Style Questionnaire (CASQ) subscale and dimensional scores, the relation between attributions and current self-reported depressive symptoms was stronger for females than males; and (5) no Sex × Diagnostic Group Status interaction effects emerged for CASQ subscale or dimensional scores. Implications of the complex findings from this large-scale, methodologically sophisticated study are addressed.

Prevention of Depression in At-Risk Adolescents: Longer-term Effects

IMPORTANCE Adolescent offspring of depressed parents are at high risk for experiencing depressive disorders themselves. OBJECTIVE To determine whether the positive effects of a group cognitive-behavioral prevention (CBP) program extended to longer-term (multiyear) follow-up. DESIGN A 4-site randomized clinical trial with 33 months of follow-up was conducted. Recruitment of participants was from August 2003 through February 2006. SETTING The study settings included a health maintenance organization, university medical centers, and a community mental health center. PARTICIPANTS Three hundred sixteen adolescent (aged 13-17 years) offspring of parents with current and/or prior depressive disorders; adolescents had histories of depression, current elevated depressive symptoms, or both but did not currently meet criteria for a depressive disorder. INTERVENTIONS The CBP program consisted of 8 weekly 90-minute group sessions followed by 6 monthly continuation sessions. Adolescents were randomly assigned to either the CBP program or usual care (UC). MAIN OUTCOMES AND MEASURES The primary outcome was a probable or definite episode of depression (Depression Symptom Rating score ≥4) for at least 2 weeks through the month 33 follow-up evaluation. RESULTS Over the 33-month follow-up period, youths in the CBP condition had significantly fewer onsets of depressive episodes compared with those in UC. Parental depression at baseline significantly moderated the intervention effect. When parents were not depressed at intake, CBP was superior to UC (number needed to treat, 6), whereas when parents were actively depressed at baseline, average onset rates between CBP and UC were not significantly different. A 3-way interaction among intervention, baseline parental depression, and site indicated that the impact of parental depression on intervention effectiveness varied across sites. CONCLUSIONS AND RELEVANCE The CBP program showed significant sustained effects compared with UC in preventing the onset of depressive episodes in at-risk youth over a nearly 3-year period. Important next steps will be to strengthen the CBP intervention to further enhance its preventive effects, improve intervention outcomes when parents are currently depressed, and conduct larger implementation trials to test the broader public health impact of the CBP program for preventing depression in youth. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00073671.

The prevention of adolescent depression.

This article provides a conceptual framework for research and outlines several new directions for the same on the prevention of depression in youth and reviews the recent literature on prevention efforts targeting children and adolescents. Prevention efforts should target both specific and nonspecific risk factors, enhance protective factors, use a developmental approach, and target selective and/or indicated samples. A review of the literature indicates that prevention programs using cognitive-behavioral and/or interpersonal approaches and family-based prevention strategies are the most helpful. Overall, it seems that there is reason for hope regarding the role of interventions in preventing depressive disorders in youth.