Remission and recovery in the Treatment for Adolescents with Depression Study (TADS): acute and long-term outcomes

Prevention and treatment of child and adolescent depression: challenges and opportunities

OBJECTIVE

To examine the current theoretical rationale and empirical evidence for preventing and treating major depressive disorder in childhood and adolescence.

METHODS

Selective review of recent controlled investigations on the efficacy and safety of preventive and treatment interventions.

RESULTS

Even more than in adults, pediatric clinical trials in depression are dominated by symptomatic improvement with non-specific clinical contact (on average, 50% 'placebo response'). The additional benefit of specific psychotherapeutic or pharmacological treatment is on average modest. Antidepressant medication is effective in speeding up improvement, but more than a third of patients do not reach full remission even after prolonged treatment. The advantage of routinely combining medication with cognitive-behavioral therapy (CBT) is unclear. Depressed suicidal adolescents can benefit from CBT and medications. CBT can protect high-risk youths from developing a depressive episode.

CONCLUSIONS

Effective interventions to prevent and treat depression in youth exist, but their therapeutic benefit appears to be, on average, small, possibly due to the clinical heterogeneity subsumed under the current diagnostic construct of depressive disorder. More specifically, targeted interventions tailored to individual clinical and biological characteristics may result in greater effectiveness and overall efficiency.

Pharmacotherapy and psychotherapy of pediatric depression

IMPORTANCE OF THE FIELD

Depressive disorders in children and adolescents are prevalent and impairing. Current available treatments of childhood depression have advanced over the years but still leave many patients with residual symptoms.

AREAS COVERED IN THIS REVIEW

We here review the pharmacotherapy and psychoptherapy of pediatric major depressive disorder. We conducted a Pubmed review on this topic covering the last 30 years.

WHAT THE READER WILL GAIN

The reader will learn about the current evidence on the efficacy and safety of the different pediatric depression treatment modalities. We review evidence-based treatments, namely cognitive behavioral therapy, interpersonal therapy, and antidepressant treatments. We critically review the extant clinical trials for these treatments, and discuss both antidepressants efficacy and adverse events, including risk for suicidal events.

TAKE HOME MESSAGE

Current treatments lead to a sustained response rate of up to 80% and a remission rate of 60% by 6 months, but we are in need of more personalized treatment to optimize treatment response. The identification of biomarkers of response may be the first step towards personalized treatment development.

Recovery and recurrence following treatment for adolescent major depression

CONTEXT

Major depressive disorder in adolescents is common and impairing. Efficacious treatments have been developed, but little is known about longer-term outcomes, including recurrence.

OBJECTIVES

To determine whether adolescents who responded to short-term treatments or who received the most efficacious short-term treatment would have lower recurrence rates, and to identify predictors of recovery and recurrence.

DESIGN

Naturalistic follow-up study.

SETTING

Twelve academic sites in the United States.

PARTICIPANTS

One hundred ninety-six adolescents (86 males and 110 females) randomized to 1 of 4 short-term interventions (fluoxetine hydrochloride treatment, cognitive behavioral therapy, their combination, or placebo) in the Treatment for Adolescents With Depression Study were followed up for 5 years after study entry (44.6% of the original Treatment for Adolescents With Depression Study sample).

MAIN OUTCOME MEASURES

Recovery was defined as absence of clinically significant major depressive disorder symptoms on the Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and Lifetime Version interview for at least 8 weeks, and recurrence was defined as a new episode of major depressive disorder following recovery.

RESULTS

Almost all participants (96.4%) recovered from their index episode of major depressive disorder during the follow-up period. Recovery by 2 years was significantly more likely for short-term treatment responders (96.2%) than for partial responders or nonresponders (79.1%) (P < .001) but was not associated with having received the most efficacious short-term treatment (the combination of fluoxetine and cognitive behavioral therapy). Of the 189 participants who recovered, 88 (46.6%) had a recurrence. Recurrence was not predicted by full short-term treatment response or by original treatment. However, full or partial responders were less likely to have a recurrence (42.9%) than were nonresponders (67.6%) (P = .03). Sex predicted recurrence (57.0% among females vs 32.9% among males; P = .02).

CONCLUSIONS

Almost all depressed adolescents recovered. However, recurrence occurs in almost half of recovered adolescents, with higher probability in females in this age range. Further research should identify and address the vulnerabilities to recurrence that are more common among young women.

The practice of evidence-based treatments in ethnic minority youth

Ethnic minority children continue to have substantial unmet mental health needs, and evidence-based treatments (EBTs) have proved challenging to disseminate widely among ethnic minority communities. Indeed, policy makers have made an important distinction between EBTs, interventions that have proven efficacy in clinical trials, and evidence-based practice, which involves "the integration of the best available research with clinical expertise in the context of patient characteristics, culture, and preferences." The present research evidence suggests that several interventions have been found to be effective in ethnic minority populations without a need for major adaptations of the original interventions. However, this article highlights the need to deliver evidence-based practice, which is defined as the implementation of EBTs delivered with fidelity and with the integration of important cultural systems and community factors.

Screening and managing depression in adolescents

Approximately 10%-15% of adolescents will experience a major depressive episode. The risk factors associated with depression in adolescence include a family history of depression, being female, subthreshold depression, having a nonaffective disorder, negative cognitions, interpersonal conflict, low social support, and stressful life events. Despite the availability of measures to identify depressed adolescents and efficacious interventions to treat these adolescents, a large number of depressed adolescents go undetected and untreated. This review describes several screening measures that can be used to identify adolescents with elevated depression symptoms who would benefit from a comprehensive diagnostic evaluation. If an adolescent is diagnosed with a depressive disorder, there are several efficacious treatment options, including pharmacotherapy, cognitive behavior therapy, and interpersonal psychotherapy. The research supporting each of these approaches is outlined, and recommendations are made to help health professionals determine the appropriate course of treatment. Although existing treatments are effective for many depressed adolescents, approximately one-third of adolescents remain depressed following treatment. Continuing research is needed to enhance the efficacy of existing treatments for adolescent depression and to develop and study novel treatment approaches.

Extreme thinking in clinically depressed adolescents: Results from the Treatment for Adolescents with Depression Study (TADS)

The purpose of this report is to examine relations between extreme thinking, as measured by the Dysfunctional Attitudes Scale, and the maintenance of gains among adolescents who participated in the Treatment for Adolescents with Depression Study (TADS). We examine extreme thinking among 327 adolescents (mean age=14.56, 57% female, 75% White) who received cognitive behavior therapy (CBT), fluoxetine (FLX), or a combination of CBT and FLX (COMB). Among those who met remission status on the Children's Depression Rating Scale - Revised (CDRS-R≤28; 56 at week 12, 79 at week 18) extreme thinking did not predict failure to maintain remission. This is in contrast to findings with depressed adults. Treatment influenced level of extreme thinking, and this appeared to be driven by greater endorsement of positively valenced beliefs as opposed to a decrease in negatively valenced beliefs. Developmental or investigation characteristics may account for the discrepancy in findings.

Achieving adolescent adherence to treatment of major depression

When treatments are ordered for adolescent major depression, or for other adolescent medical illnesses, adherence and clinical outcomes are likely to be unsatisfactory, unless 4 basic principles of the medical treatment of adolescent illness are implemented. These comprise providing effective patient and parent/caregiver education, establishing effective patient and caregiver therapeutic alliances, providing effective treatment, and managing other factors associated with treatment adherence as indicated. The goals of treatment are to achieve the earliest possible response and remission. Failure to treat adolescent major depression successfully has potentially serious consequences, including worsened adherence, long-term morbidity, and suicide attempt. Accordingly, prescribed treatment must be aggressively managed. Doses of an antidepressant medication should be increased as rapidly as can be tolerated, preferably every 1-2 weeks, until full remission is achieved or such dosing is limited by the emergence of unacceptable adverse effects. A full range of medication treatment options must be employed if necessary. Treatment adherence, occurrence of problematic adverse effects, clinical progress, and safety must be systematically monitored. Adolescents with major depression must be assessed for risk of harm to self or others. When this risk appears significant, likelihood of successful outcomes will be enhanced by use of treatment plans that comprehensively address factors associated with treatment nonadherence. Abbreviated and comprehensive plans for the treatment of potentially fatal adolescent illnesses are outlined in this review.

Treatment of Resistant Depression in Adolescents (TORDIA): week 24 outcomes

OBJECTIVE

The purpose of this study was to report on the outcome of participants in the Treatment of Resistant Depression in Adolescents (TORDIA) trial after 24 weeks of treatment, including remission and relapse rates and predictors of treatment outcome.

METHOD

Adolescents (ages 12-18 years) with selective serotonin reuptake inhibitor (SSRI)-resistant depression were randomly assigned to either a medication switch alone (alternate SSRI or venlafaxine) or a medication switch plus cognitive-behavioral therapy (CBT). At week 12, responders could continue in their assigned treatment arm and nonresponders received open treatment (medication and/or CBT) for 12 more weeks (24 weeks total). The primary outcomes were remission and relapse, defined by the Adolescent Longitudinal Interval Follow-Up Evaluation as rated by an independent evaluator.

RESULTS

Of 334 adolescents enrolled in the study, 38.9% achieved remission by 24 weeks, and initial treatment assignment did not affect rates of remission. Likelihood of remission was much higher (61.6% versus 18.3%) and time to remission was much faster among those who had already demonstrated clinical response by week 12. Remission was also higher among those with lower baseline depression, hopelessness, and self-reported anxiety. At week 12, lower depression, hopelessness, anxiety, suicidal ideation, family conflict, and absence of comorbid dysthymia, anxiety, and drug/alcohol use and impairment also predicted remission. Of those who responded by week 12, 19.6% had a relapse of depression by week 24.

CONCLUSIONS

Continued treatment for depression among treatment-resistant adolescents results in remission in approximately one-third of patients, similar to adults. Eventual remission is evident within the first 6 weeks in many, suggesting that earlier intervention among nonresponders could be important.

From TADS and SOFTADS to TORDIA and beyond: what's new in the treatment of adolescent depression?

Major depressive disorder in adolescents is associated with significant morbidity and mortality. Major advances have been made in recent years in the treatment of adolescent depression, with promising outcomes. However, limitations of currently available treatments have prompted attempts to better understand pediatric depression from a broader perspective and to develop more effective treatment strategies in the future.

Depressive symptoms and clinical status during the Treatment of Adolescent Suicide Attempters (TASA) Study

OBJECTIVE

To examine the course of depression during the treatment of adolescents with depression who had recently attempted suicide.

METHOD

Adolescents (N = 124), ages 12 to 18 years, with a 90-day history of suicide attempt, a current diagnosis of depressive disorder (96.0% had major depressive disorder), and a Children's Depression Rating Scale-Revised (CDRS-R) score of 36 or higher, entered a 6-month treatment with antidepressant medication, cognitive-behavioral therapy focused on suicide prevention, or their combination (Comb), at five academic sites. Treatment assignment could be either random or chosen by study participants. Intent-to-treat, mixed effects regression models of depression and other relevant ratings were estimated. Improvement and remission rates were computed with the last observation carried forward.

RESULTS

Most patients (n = 104 or 84%) chose treatment assignment, and overall, three fourths (n = 93) received Comb. In Comb, CDRS-R declined from a baseline adjusted mean of 49.6 (SD 12.3) to 38.3 (8.0) at week 12 and to 27.0 (10.1) at week 24 (p < .0001), with a Clinical Global Impression -defined improvement rate of 58.0% at week 12 and 72.2% at week 24 and a remission (CDRS-R ≤ 28) rate of 32.5% at week 12 and 50.0% at week 24. The CDRS-R and the Scale for Suicidal Ideation scores were correlated at baseline (r = 0.43, p < .0001) and declined in parallel.

CONCLUSIONS

When vigorously treated with a combination of medication and psychotherapy, adolescents with depression who have recently attempted suicide show rates of improvement and remission of depression that seem comparable to those observed in nonsuicidal adolescents with depression.