Psychological treatment of depression: a meta-analytic database of randomized studies

Internet-based treatment of major depression for patients on a waiting list for inpatient psychotherapy: protocol for a multi-centre randomised controlled trial

BACKGROUND

Major depressive disorder (MDD) is a prevalent and severe disorder. Although effective treatments for MDD are available, many patients remain untreated, mainly because of insufficient treatment capacities in the health care system. Resulting waiting periods are often associated with prolonged suffering and impairment as well as a higher risk of chronification. Web-based interventions may help to alleviate these problems. Numerous studies provided evidence for the efficacy of web-based interventions for depression. The aim of this study is to evaluate a new web-based guided self-help intervention (GET.ON-Mood Enhancer-WL) specifically developed for patients waiting to commence inpatient therapy for MDD.

METHODS

In a two-armed randomised controlled trial (n = 200), the web-based guided intervention GET.ON-Mood Enhancer-WL in addition to treatment as usual (TAU) will be compared with TAU alone. The intervention contains six modules (psycho education, behavioural activation I & II, problem solving I & II, and preparation for subsequent inpatient depression therapy). The participants will be supported by an e-coach, who will provide written feedback after each module. Inclusion criteria include a diagnosis of MDD assessed with a structured clinical interview [SCID] and a waiting period of at least three weeks before start of inpatient treatment. The primary outcome is observer-rated depressive symptom severity (HRSD24). Further (explorative) questions include whether remission will be achieved earlier and by more patients during inpatient therapy because of the web-based preparatory intervention.

DISCUSSION

If GET.ON-Mood Enhancer-WL is proven to be effective, patients may start inpatient therapy with reduced depressive symptom severity, ideally leading to higher remission rates, shortened inpatient therapy, reduced costs, and decreased waiting times.

TRIAL REGISTRATION

German Clinical Trial Registration (DRKS): DRKS00004708.

How much psychotherapy is needed to treat depression? A metaregression analysis

BACKGROUND

Although psychotherapies are effective in the treatment of adult depression it is not clear how this treatment effect is related to amount, frequency and intensity of therapy.

METHODS

To fill this gap in knowledge, the present metaregression analysis examined the association between the effects of psychotherapy for adult depression and several indicators of amount, frequency and intensity of therapy. The analysis included 70 studies (92 comparisons) with 5403 patients, in which individual psychotherapy was compared with a control group (e.g. waiting list, care-as-usual).

RESULTS

There was only a small association between number of therapy sessions and effect size, and this association was no longer significant when the analysis adjusted for other characteristics of the studies. The multivariable analyses also found no significant association with the total contact time or duration of the therapy. However, there was a strong association between number of sessions per week and effect size. An increase from one to two sessions per week increased the effect size with g=0.45, while keeping the total number of treatment sessions constant.

DISCUSSION

More research is needed to establish the robustness of this finding. Based on these findings, it may be advisable to concentrate psychotherapy sessions within a brief time frame.

A meta-analysis of cognitive-behavioural therapy for adult depression, alone and in comparison with other treatments

OBJECTIVE

No recent meta-analysis has examined the effects of cognitive-behavioural therapy (CBT) for adult depression. We decided to conduct such an updated meta-analysis.

METHODS

Studies were identified through systematic searches in bibliographical databases (PubMed, PsycINFO, Embase, and the Cochrane library). We included studies examining the effects of CBT, compared with control groups, other psychotherapies, and pharmacotherapy.

RESULTS

A total of 115 studies met inclusion criteria. The mean effect size (ES) of 94 comparisons from 75 studies of CBT and control groups was Hedges g = 0.71 (95% CI 0.62 to 0.79), which corresponds with a number needed to treat of 2.6. However, this may be an overestimation of the true ES as we found strong indications for publication bias (ES after adjustment for bias was g = 0.53), and because the ES of higher-quality studies was significantly lower (g = 0.53) than for lower-quality studies (g = 0.90). The difference between high- and low-quality studies remained significant after adjustment for other study characteristics in a multivariate meta-regression analysis. We did not find any indication that CBT was more or less effective than other psychotherapies or pharmacotherapy. Combined treatment was significantly more effective than pharmacotherapy alone (g = 0.49).

CONCLUSIONS

There is no doubt that CBT is an effective treatment for adult depression, although the effects may have been overestimated until now. CBT is also the most studied psychotherapy for depression, and thus has the greatest weight of evidence. However, other treatments approach its overall efficacy.

Comparing bona fide psychotherapies of depression in adults with two meta-analytical approaches

Objective

Despite numerous investigations, the question whether all bona fide treatments of depression are equally efficacious in adults has not been sufficiently answered.

Method

We applied two different meta-analytical techniques (conventional meta-analysis and mixed treatment comparisons). Overall, 53 studies with 3,965 patients, which directly compared two or more bona fide psychotherapies in a randomized trial, were included. Meta-analyses were conducted regarding five different types of outcome measures. Additionally, the influence of possible moderators was examined.

Results

Direct comparisons of cognitive behavior therapy, behavior activation therapy, psychodynamic therapy, interpersonal therapy, and supportive therapies versus all other respective treatments indicated that at the end of treatment all treatments but supportive therapies were equally efficacious whereas there was some evidence that supportive therapies were somewhat less efficacious than all other treatments according to patient self-ratings and clinical significance. At follow-up no significant differences were present. Age, gender, comorbid mental disorders, and length of therapy session were found to moderate efficacy. Cognitive behavior therapy was superior in studies where therapy sessions lasted 90 minutes or longer, behavior activation therapy was more efficacious when therapy sessions lasted less than 90 minutes. Mixed treatment comparisons indicated no statistically significant differences in treatment efficacy but some interesting trends.

Conclusions

This study suggests that there might be differential effects of bona fide psychotherapies which should be examined in detail.

Cognitive Behavioral Treatment for Recurrent Binge Eating in Adolescent Girls: A Pilot Trial

There is a need for treatment interventions to address the high prevalence of disordered eating throughout adolescence and early adulthood. We developed an adolescent-specific manualized CBT protocol to treat female adolescents with recurrent binge eating and tested its efficacy in a small, pilot randomized controlled trial. We present lessons learned in recruiting adolescents, a description of our treatment approach, acceptability of the treatment for teens and parents, as well as results from the pilot trial. Participants in the CBT group had significantly fewer posttreatment eating binges than those in a treatment as usual/delayed treatment (TAU-DT) control group; 100% of CBT participants were abstinent at follow-up. Our results provide preliminary support for the efficacy of this adolescent adaptation of evidence-based CBT for recurrent binge eating. The large, robust effect size estimate observed for the main outcome (NNT=2) places this among the larger effects observed for any mental health intervention.

Diagnosis and Treatment of Depression Following Traumatic Brain Injury

Depression is one of the most common psychiatric diagnoses among individuals with traumatic brain injury (TBI). Prevalence of post-TBI depression (PTBID) ranges from 12 to 60% and is generally higher than rates reported in the general population. The wide range in reported rates is attributed to methodological variability across studies, including measurement and sampling differences. Several systematic reviews have been published in the past 5 years, reporting on outcomes for depression across different classes of interventions, including pharmacological, biomedical and behavioural. The consensus across reviews is that more research is necessary to develop evidence-based practice guidelines. The present narrative review synthesises the findings of previous studies, focusing on the nature of the interventions, the eligibility criteria for inclusion and the assessment of outcome. Pharmacological studies are generally more rigorous methodologically, but provide mixed findings. Other biomedical interventions are only at the initial stages of research development, including case and pilot studies. The results of behavioural studies are positive regarding improvements in mood. However, the number of efficacy studies of behavioural interventions for depression is extremely limited. Recommendations for designing interventions are provided.

Randomized trial on the effectiveness of long- and short-term psychotherapy on psychiatric symptoms and working ability during a 5-year follow-up

BACKGROUND

The information on whether long-term psychotherapy is superior in comparison with short-term therapies during a long time-perspective in the treatment of mood and anxiety disorder is incomplete.

AIMS

The present study addresses this question in a clinical trial with an exceptionally long follow-up.

METHODS

In the Helsinki Psychotherapy Study, 326 outpatients with mood or anxiety disorder were randomly assigned to long-term psychodynamic psychotherapy and two types of short-term psychotherapy (short-term psychodynamic psychotherapy and solution-focused therapy) and were followed up for 5 years from the start of treatment. The outcome measures were psychiatric symptoms measured by Beck Depression Inventory (BDI), Hamilton Depression Rating Scale (HDRS), Symptom Check List, anxiety scale (SCL-90-Anx), Hamilton Anxiety Rating Scale (HARS) and Symptom Check List, Global Severity Index (SCL-90-GSI), and working ability measured by the Work Ability Index (WAI), the Work-subscale (SAS-Work) of the Social Adjustment Scale (SAS-SR) and the Perceived Psychological Functioning Scale (PPF). Furthermore, remission variables based on changes in psychiatric symptoms and use of auxiliary treatment, were used.

RESULTS

After the 5-year follow-up, the rate of recovery from psychiatric symptoms and the work ability improvement rate remained higher in the long-term therapy group, whereas no differences in the effectiveness of the two short-term therapies of different modalities were found.

CONCLUSIONS

Long-term psychotherapy is more effective than short-term therapy during a long follow-up, suggesting the need for a careful evaluation of suitability to short-term therapy. More research on the long-term effects of psychotherapy in large-scale studies is still needed, however.

The effects of psychotherapy for adult depression on suicidality and hopelessness: a systematic review and meta-analysis

BACKGROUND

Although treatment guidelines suggest that suicidal patients with depression should be treated for depression with psychotherapy, it is not clear whether these psychological treatments actually reduce suicidal ideation or suicide risk.

METHODS

We conducted a systematic review and meta-analysis of studies on psychotherapy for depression in which outcomes on suicidality were reported. We also focused on outcomes on hopelessness because this is strongly associated with suicidal behavior in depression.

RESULTS

Thirteen studies (with 616 patients) were included, three of which examined the effects of psychotherapy for depression on suicidal ideation and suicide risk, and eleven on hopelessness. No studies were found with suicide attempts or completed suicides as the outcome variables. The effects on suicidal ideation and suicide risk were small (g=0.12; 95% CI: -0.20-0.44) and not statistically significant. A power calculation showed that these studies only had sufficient power to find an effect size of g=0.47. The effects on hopelessness were large (g=1.10; 95% CI: 0.72-1.48) and significant, although heterogeneity was very high. Furthermore, significant publication bias was found. After adjustment of publication bias the effect size was reduced to g=0.60.

DISCUSSION

At this point, there is insufficient evidence for the assumption that suicidality in depressed patients can be reduced with psychotherapy for depression. Although psychotherapy of depression may have small positive effects on suicidality, available data suggest that psychotherapy for depression cannot be considered to be a sufficient treatment. The effects on hopelessness are probably higher.

The effectiveness of individual interpersonal psychotherapy as a treatment for major depressive disorder in adult outpatients: a systematic review

BACKGROUND

This systematic review describes a comparison between several standard treatments for major depressive disorder (MDD) in adult outpatients, with a focus on interpersonal psychotherapy (IPT).

METHODS

Systematic searches of PubMed and PsycINFO studies between January 1970 and August 2012 were performed to identify (C-)RCTs, in which MDD was a primary diagnosis in adult outpatients receiving individual IPT as a monotherapy compared to other forms of psychotherapy and/or pharmacotherapy.

RESULTS

1233 patients were included in eight eligible studies, out of which 854 completed treatment in outpatient facilities. IPT combined with nefazodone improved depressive symptoms significantly better than sole nefazodone, while undefined pharmacotherapy combined with clinical management improved symptoms better than sole IPT. IPT or imipramine hydrochloride with clinical management showed a better outcome than placebo with clinical management. Depressive symptoms were reduced more in CBASP (cognitive behavioral analysis system of psychotherapy) patients in comparison with IPT patients, while IPT reduced symptoms better than usual care and wait list condition.

CONCLUSIONS

The differences between treatment effects are very small and often they are not significant. Psychotherapeutic treatments such as IPT and CBT, and/or pharmacotherapy are recommended as first-line treatments for depressed adult outpatients, without favoring one of them, although the individual preferences of patients should be taken into consideration in choosing a treatment.

Positive Psychology Theory, Research, and Practice: A Primer for Rehabilitation Counseling Professionals

Positive psychology is a scientific study that explores what makes life most worth living and applies psychological theory to understand the human strengths that are important for enhancing overall well-being and happiness. The rehabilitation counseling philosophy shares a similar emphasis on personal strengths and the importance of enhancing what is good rather than merely addressing the negative aspects of adversity. The field of rehabilitation counseling provides a solid foundation for the practice of positive psychology and there is great potential for improving services and outcomes for people with disabilities by applying positive psychology approaches in rehabilitation practice and research. The objective of this article is to provide rehabilitation professionals an overview of positive psychology and its application to rehabilitation counseling. Specifically, a brief history of the positive psychology movement, major constructs and research findings, measurement considerations, and empirically supported intervention frameworks will be reviewed.

Comparative efficacy of seven psychotherapeutic interventions for patients with depression: a network meta-analysis

BACKGROUND

Previous meta-analyses comparing the efficacy of psychotherapeutic interventions for depression were clouded by a limited number of within-study treatment comparisons. This study used network meta-analysis, a novel methodological approach that integrates direct and indirect evidence from randomised controlled studies, to re-examine the comparative efficacy of seven psychotherapeutic interventions for adult depression.

METHODS AND FINDINGS

We conducted systematic literature searches in PubMed, PsycINFO, and Embase up to November 2012, and identified additional studies through earlier meta-analyses and the references of included studies. We identified 198 studies, including 15,118 adult patients with depression, and coded moderator variables. Each of the seven psychotherapeutic interventions was superior to a waitlist control condition with moderate to large effects (range d = -0.62 to d = -0.92). Relative effects of different psychotherapeutic interventions on depressive symptoms were absent to small (range d = 0.01 to d = -0.30). Interpersonal therapy was significantly more effective than supportive therapy (d = -0.30, 95% credibility interval [CrI] [-0.54 to -0.05]). Moderator analysis showed that patient characteristics had no influence on treatment effects, but identified aspects of study quality and sample size as effect modifiers. Smaller effects were found in studies of at least moderate (Δd = 0.29 [-0.01 to 0.58]; p = 0.063) and large size (Δd = 0.33 [0.08 to 0.61]; p = 0.012) and those that had adequate outcome assessment (Δd = 0.38 [-0.06 to 0.87]; p = 0.100). Stepwise restriction of analyses by sample size showed robust effects for cognitive-behavioural therapy, interpersonal therapy, and problem-solving therapy (all d>0.46) compared to waitlist. Empirical evidence from large studies was unavailable or limited for other psychotherapeutic interventions.

CONCLUSIONS

Overall our results are consistent with the notion that different psychotherapeutic interventions for depression have comparable benefits. However, the robustness of the evidence varies considerably between different psychotherapeutic treatments.

Does cognitive behaviour therapy have an enduring effect that is superior to keeping patients on continuation pharmacotherapy? A meta-analysis

OBJECTIVES

Although cognitive behaviour therapy (CBT) and pharmacotherapy are equally effective in the acute treatment of adult depression, it is not known how they compare across the longer term. In this meta-analysis, we compared the effects of acute phase CBT without any subsequent treatment with the effects of pharmacotherapy that either were continued or discontinued across 6-18 months of follow-up.

DESIGN

We conducted systematic searches in bibliographical databases to identify relevant studies, and conducted a meta-analysis of studies meeting inclusion criteria.

SETTING

Mental healthcare.

PARTICIPANTS

Patients with depressive disorders.

INTERVENTIONS

CBT and pharmacotherapy for depression.

OUTCOME MEASURES

Relapse rates at long-term follow-up.

RESULTS

9 studies with 506 patients were included. The quality was relatively high. Short-term outcomes of CBT and pharmacotherapy were comparable, although drop out from treatment was significantly lower in CBT. Acute phase CBT was compared with pharmacotherapy discontinuation during follow-up in eight studies. Patients who received acute phase CBT were significantly less likely to relapse than patients who were withdrawn from pharmacotherapy (OR=2.61, 95% CI 1.58 to 4.31, p<0.001; numbers-needed-to-be-treated, NNT=5). The acute phase CBT was compared with continued pharmacotherapy at follow-up in five studies. There was no significant difference between acute phase CBT and continued pharmacotherapy, although there was a trend (p<0.1) indicating that patients who received acute phase CBT may be less likely to relapse following acute treatment termination than patients who were continued on pharmacotherapy (OR=1.62, 95% CI 0.97 to 2.72; NNT=10).

CONCLUSIONS

We found that CBT has an enduring effect following termination of the acute treatment. We found no significant difference in relapse after the acute phase CBT versus continuation of pharmacotherapy after remission. Given the small number of studies, this finding should be interpreted with caution pending replication.

Effectiveness of cognitive behavioral therapy for depression in patients receiving disability benefits: a systematic review and individual patient data meta-analysis

Objectives

To systematically summarize the randomized trial evidence regarding the relative effectiveness of cognitive behavioural therapy (CBT) in patients with depression in receipt of disability benefits in comparison to those not receiving disability benefits.

Data Sources

All relevant RCTs from a database of randomized controlled and comparative studies examining the effects of psychotherapy for adult depression (http://www.evidencebasedpsychotherapies.org), electronic databases (MEDLINE, EMBASE, PSYCINFO, AMED, CINAHL and CENTRAL) to June 2011, and bibliographies of all relevant articles.

Study Eligibility Criteria, Participants and Intervention

Adult patients with major depression, randomly assigned to CBT versus minimal/no treatment or care-as-usual.

Study Appraisal and Synthesis Methods

Three teams of reviewers, independently and in duplicate, completed title and abstract screening, full text review and data extraction. We performed an individual patient data meta-analysis to summarize data.

Results

Of 92 eligible trials, 70 provided author contact information; of these 56 (80%) were successfully contacted to establish if they captured receipt of benefits as a baseline characteristic; 8 recorded benefit status, and 3 enrolled some patients in receipt of benefits, of which 2 provided individual patient data. Including both patients receiving and not receiving disability benefits, 2 trials (227 patients) suggested a possible reduction in depression with CBT, as measured by the Beck Depression Inventory, mean difference [MD] (95% confidence interval [CI]) = −2.61 (−5.28, 0.07), p = 0.06; minimally important difference of 5. The effect appeared larger, though not significantly, in those in receipt of benefits (34 patients) versus not receiving benefits (193 patients); MD (95% CI) = −4.46 (−12.21, 3.30), p = 0.26.

Conclusions

Our data does not support the hypothesis that CBT has smaller effects in depressed patients receiving disability benefits versus other patients. Given that the confidence interval is wide, a decreased effect is still possible, though if the difference exists, it is likely to be small.

Personalized treatment of adult depression: medication, psychotherapy, or both? A systematic review

BACKGROUND

Personalized medicine aims to identify which characteristics of an individual predict the outcome of a specific treatment, in order to get a better match between the individual and the treatment received. We conducted a systematic review and meta-analysis of randomized trials comparing two treatments directly in a group of patients with a specific characteristic.

METHODS

We searched relevant studies from bibliographical databases and included trials comparing (1) medication with psychotherapy, (2) medication with combined treatment, and (3) psychotherapy with combined treatment, in specific target groups (a) with a predefined sociodemographic characteristic, (b) a specific type of depression, (c) a comorbid mental or somatic disorder, or (d) from a specific setting (outpatients, primary care).

RESULTS

We included 52 studies with 4,734 depressed patients. In these studies, 20 characteristics of the target groups were examined. The results showed that medication is probably the best treatment for dysthymia, and combined treatments are more effective in depressed outpatients, as well as in depressed older adults. However, in order to examine the 20 characteristics in the three categories of comparisons, 254 studies would be needed for having sufficient statistical power to show an effect size of g = 0.5. Currently, only 20.1% of these studies have been conducted.

CONCLUSIONS

Although a considerable number of studies have compared medication, psychotherapy, and combined treatments, and some preliminary results are useful for deciding which treatment is best for which patient, the development of personalized treatment of depression has only just begun.

High risk alcohol-related trauma among the Aboriginal and Torres Strait Islanders in the Northern Territory

High risk drinking is linked with high rates of physical harm. The reported incidence of alcohol - related trauma among Aboriginal and Torres Strait Islander people in the Northern Territory is the highest in the world. Facial fractures are common among young Aboriginal and Torres Strait Islanders. They are often linked with misuse of alcohol in the Northern Territory and are frequently secondary to assault. This review focuses on alcohol-related trauma in the Territory and draws attention to an urgent need for preventative health approach to address this critical issue.

The efficacy of non-directive supportive therapy for adult depression: a meta-analysis

The effects of non-directive supportive therapy (NDST) for adult depression have been examined in a considerable number of studies, but no meta-analysis of these studies has been conducted. We selected 31 studies on NDST from a comprehensive database of trials, examining psychotherapies for adult depression, and conducted meta-analyses in which NDST was compared with control groups, other psychotherapies and pharmacotherapy. We found that NDST is effective in the treatment of depression in adults (g=0.58; 95% CI: 0.45-0.72). NDST was less effective than other psychological treatments (differential effect size g=-0.20; 95% CI: -0.32 to -0.08, p<0.01), but these differences were no longer present after controlling for researcher allegiance. We estimated that extra-therapeutic factors (those processes operating in waiting-list and care-as-usual controls) were responsible for 33.3% of the overall improvement, non-specific factors (the effects of NDST compared with control groups) for 49.6%, and specific factors (the effects of NDST compared with other therapies) for 17.1%. NDST has a considerable effect on symptoms of depression. Most of the effect of therapy for adult depression is realized by non-specific factors, and our results suggest that the contribution of specific effects is limited at best.

Brief psychotherapy for depression: a systematic review and meta-analysis

OBJECTIVE

Because evidence-based psychotherapies of 12 to 20 sessions can be perceived as too lengthy and time intensive for the treatment of depression in primary care, a number of studies have examined abbreviated psychotherapy protocols. The purpose of this study was to conduct a systematic review and meta-analysis to determine the efficacy of brief psychotherapy (i.e., < or =8 sessions) for depression.

METHODS

We used combined literature searches in PubMed, EMBASE, PsycINFO, and an Internet-accessible database of clinical trials of psychotherapy to conduct two systematic searches: one for existing systematic reviews and another for randomized controlled trials (RCTs). Included studies examined evidence-based psychotherapy(s) of eight or fewer sessions, focused on adults with depression, contained an acceptable control condition, were published in English, and used validated measures of depressive symptoms.

RESULTS

We retained 2 systematic reviews and 15 RCTs evaluating cognitive behavioral therapy, problem-solving therapy, and mindfulness-based cognitive therapy. The systematic reviews found brief psychotherapies to be more efficacious than control, with effect sizes ranging from -0.33 to -0.25. Our meta-analysis found six to eight sessions of cognitive behavioral therapy to be more efficacious than control (ES -0.42, 95% CI -0.74 to -0.10, 12 = 56%). A sensitivity analysis controlled for statistical heterogeneity but showed smaller treatment effects (ES -0.24, 95% CI -0.42 to -0.06, 12 = 0%).

CONCLUSIONS

Depression can be efficaciously treated with six to eight sessions of psychotherapy, particularly cognitive behavioral therapy and problem-solving therapy. Access to non-pharmacologic treatments for depression could be improved by training healthcare providers to deliver brief psychotherapies.

Psychological treatment of depression: results of a series of meta-analyses

BACKGROUND

In the past few decades, a considerable number of studies have examined the effects of psychotherapies for adult depression.

AIM

We described the results of a series of meta-analyses examining what this large body of research has contributed to our knowledge of these treatments of depression.

RESULTS

We found that different types of psychotherapy are efficacious in the treatment of adult depression, including cognitive behavior therapy, interpersonal psychotherapy, problem-solving therapy, non-directive supportive therapy and behavioral activation therapy. Differences between types of psychotherapy are small. The efficacy of psychotherapy for mild to moderate depression is about the same as the efficacy of pharmacotherapy, and that combined treatment is more effective than psychotherapy alone and pharmacotherapy alone. Psychotherapy is not only effective in depressed adults in general, but also in older adults, women with postpartum depression, patients with general medical disorders, in inpatients, in primary care patients, patients with chronic depression and in subthreshold depression.

CONCLUSIONS

We found no evidence showing that psychotherapy is less efficacious in severe depression (with mean baseline Hamilton Depression Rating Scale scores up to 31, mean Beck Depression Inventory scores up to 35.85 and mean Beck Depression Inventory-II scores up to 36.50), but effects are smaller in chronic depression. We also found that the effects of psychotherapy are probably overestimated because of publication bias and the relatively low quality of many studies in the field.

Self-guided psychological treatment for depressive symptoms: a meta-analysis

Background

A number of trials have examined the effects of self-guided psychological intervention, without any contact between the participants and a therapist or coach. The results and sizes of these trials have been mixed. This is the first quantitative meta-analysis, aimed at organizing and evaluating the literature, and estimating effect size.

Method

We conducted systematic literature searches in PubMed, PsycINFO and Embase up to January 2010, and identified additional studies through earlier meta-analyses, and the references of included studies. We identified seven randomized controlled trials that met our inclusion criteria, with a total of 1,362 respondents. The overall quality of the studies was high. A post-hoc power calculation showed that the studies had sufficient statistical power to detect an effect size of d = 0.19.

Results

The overall mean effect size indicating the difference between self-guided psychological treatment and control groups at post-test was d = 0.28 (p<0.001), which corresponds to a NNT of 6.41. At 4 to 12 months follow-up the effect size was d = 0.23. There was no indication for significant publication bias.

Conclusions

We found evidence that self-guided psychological treatment has a small but significant effect on participants with increased levels of depressive symptomatology.

Interpersonal psychotherapy for depression: a meta-analysis

OBJECTIVE

Interpersonal psychotherapy (IPT), a structured and time-limited therapy, has been studied in many controlled trials. Numerous practice guidelines have recommended IPT as a treatment of choice for unipolar depressive disorders. The authors conducted a meta-analysis to integrate research on the effects of IPT.

METHOD

The authors searched bibliographical databases for randomized controlled trials comparing IPT with no treatment, usual care, other psychological treatments, and pharmacotherapy as well as studies comparing combination treatment using pharmacotherapy and IPT. Maintenance studies were also included.

RESULTS

Thirty-eight studies including 4,356 patients met all inclusion criteria. The overall effect size (Cohen's d) of the 16 studies that compared IPT and a control group was 0.63 (95% confidence interval [CI]=0.36 to 0.90), corresponding to a number needed to treat of 2.91. Ten studies comparing IPT and other psychological treatments showed a nonsignificant differential effect size of 0.04 (95% CI=-0.14 to 0.21; number needed to treat=45.45) favoring IPT. Pharmacotherapy (after removal of one outlier) was more effective than IPT (d=-0.19, 95% CI=-0.38 to -0.01; number needed to treat=9.43), and combination treatment was not more effective than IPT alone, although the paucity of studies precluded drawing definite conclusions. Combination maintenance treatment with pharmacotherapy and IPT was more effective in preventing relapse than pharmacotherapy alone (odds ratio=0.37; 95% CI=0.19 to 0.73; number needed to treat=7.63).

CONCLUSIONS

There is no doubt that IPT efficaciously treats depression, both as an independent treatment and in combination with pharmacotherapy. IPT deserves its place in treatment guidelines as one of the most empirically validated treatments for depression.

Psychotherapy versus second-generation antidepressants in the treatment of depression: a meta-analysis

Most meta-analyses have concluded that psychotherapy and pharmacotherapy yield roughly similar efficacy in the short-term treatment of depression, with psychotherapy showing some advantage at long-term follow-up. However, a recent meta-analysis found that selective serotonin reuptake inhibitors medications were superior to psychotherapy in the short-term treatment of depression. To incorporate results of several recent trials into the meta-analytic literature, we conducted a meta-analysis of trials which directly compared psychotherapy to second-generation antidepressants (SGAs). Variables potentially moderating the quality of psychotherapy or medication delivery were also examined, to allow the highest quality comparison of both types of intervention. Bona fide psychotherapies showed equivalent efficacy in the short-term and slightly better efficacy on depression rating scales at follow-up relative to SGA. Non-bona fide therapies had significantly worse short-term outcomes than medication (d = 0.58). No significant differences emerged between treatments in terms of response or remission rates, but non-bona fide therapies had significantly lower rates of study completion than medication (odds ratio = 0.55). Bona fide psychotherapy appears as effective as SGAs in the short-term treatment of depression, and likely somewhat more effective than SGAs in the longer-term management of depressive symptoms.

Psychological treatment of depression in inpatients: a systematic review and meta-analysis

Research on psychological treatment of depression in inpatients is not conclusive, with some studies finding clear positive effects and other studies finding no significant benefit compared to usual care or structured pharmacotherapy. The results of a meta-analysis investigating how effective psychological treatment is for depressed inpatients are presented. A systematic search in bibliographical databases resulted in 12 studies with a total of 570 respondents. This set of studies had sufficient statistical power to detect small effect sizes. Psychological treatments had a small (g=0.29), but statistically significant additional effect on depression compared to usual care and structured pharmacological treatments only. This corresponded with a numbers-needed-to-be-treated of 6.17. Heterogeneity was zero in most analyses, and not significant in all analyses. There was no indication for significant publication bias. Effects were not associated with characteristics of the population, the interventions and the design of the studies. Although the number of studies was small, and the quality of many studies was not optimal, it seems safe to conclude that psychological treatments have a small but robust effect on depression in depressed inpatients. More high-quality research is needed to verify these results.

Bibliotherapy as a treatment for depression in primary care

This study was designed to determine whether a physician-delivered bibliotherapy prescription would compare favorably with the prevailing usual care treatment for depression in primary care (that often involves medication) and potentially offer an alternative. Six family physicians were trained to write and deliver prescriptions for cognitive-behavioral bibliotherapy. Thirty-eight patients were randomly assigned to receive either usual care or a behavioral prescription to read the self-help book, Feeling Good (Burns, D. D. (1999). Feeling good: The new mood therapy. New York: HarperCollins). The treatment groups did not differ in terms of overall outcome variables. Patients in both treatment groups reported statistically significant decreases in depression symptoms, decreases in dysfunctional attitudes, and increases in quality of life. Although not statistically significant, the mean net medical expenses in the behavioral prescription group were substantially less. This study provided empirical evidence that a behavioral prescription for Feeling Good may be as effective as standard care, which commonly involves an antidepressant prescription.

Dysthymia in a cross-cultural perspective

PURPOSE OF REVIEW

Dysthymia is a relatively less-studied condition within the spectrum of depressive disorders. New and important information about its status has emerged in recent scientific literature. This review highlights some of the findings of that literature.

RECENT FINDINGS

Even though studies addressing the cross-cultural validity of dysthymia are being awaited, results of studies using comparable ascertainment procedures suggest that the lifetime and 12-month estimates of the condition may be higher in high-income than in low and middle-income countries. However, the disorder is associated with elevated risks of suicidal outcomes and comparable levels of disability whereever it occurs. Dysthymia commonly carries a worse prognosis than major depressive disorder and comparable or worse clinical outcome than other forms of chronic depression. Whereas there is some evidence that psychotherapy may be less effective than pharmacotherapy in the treatment of dysthymia, the best treatment approach is one that combines both forms of treatment.

SUMMARY

Dysthymia is a condition of considerable public health importance. Our current understanding suggests that it should receive more clinical and research attention. Specifically, the development of better treatment approaches, especially those that can be implemented in diverse populations, deserves research attention.

Is guided self-help as effective as face-to-face psychotherapy for depression and anxiety disorders? A systematic review and meta-analysis of comparative outcome studies

BACKGROUND

Although guided self-help for depression and anxiety disorders has been examined in many studies, it is not clear whether it is equally effective as face-to-face treatments.MethodWe conducted a meta-analysis of randomized controlled trials in which the effects of guided self-help on depression and anxiety were compared directly with face-to-face psychotherapies for depression and anxiety disorders. A systematic search in bibliographical databases (PubMed, PsycINFO, EMBASE, Cochrane) resulted in 21 studies with 810 participants.

RESULTS

The overall effect size indicating the difference between guided self-help and face-to-face psychotherapy at post-test was d=-0.02, in favour of guided self-help. At follow-up (up to 1 year) no significant difference was found either. No significant difference was found between the drop-out rates in the two treatments formats.

CONCLUSIONS

It seems safe to conclude that guided self-help and face-to-face treatments can have comparable effects. It is time to start thinking about implementation in routine care.

Continuous and dichotomous outcomes in studies of psychotherapy for adult depression: a meta-analytic comparison

BACKGROUND

In treatment research on depressive disorders, outcomes can be based on continuous outcomes but also on dichotomous outcomes. Although it is possible to convert the two types of outcomes to each other, it has not been tested whether this results in systematic differences.

METHOD

We selected studies on psychotherapy for adult depression from an existing database, in which both continuous and dichotomous outcomes were presented. We calculated effect sizes using both types of outcomes, and compared the results.

RESULTS

Although there were considerable differences between the two types of outcomes in individual studies, both types of outcomes resulted in very similar pooled effect sizes. The pooled effect size based on the continuous outcome were somewhat more conservative (d=0.59; OR=2.92) than the one based on the dichotomous outcome (d=0.64; OR=3.17). Heterogeneity was higher in the analyses based on the continuous outcomes than in those based on the dichotomous outcomes. Sensitivity analyses and subgroup analyses confirmed that the pooled effect sizes were very similar, that the effect sizes were somewhat smaller when the continuous outcomes are used, and that heterogeneity was higher in the analyses based on the continuous outcomes.

CONCLUSION

Overall, the two types of outcomes result in comparable pooled effect sizes and can both be used in meta-analyses. However, the results of the two types of outcomes should not be used interchangeably, because there may be systematic differences in heterogeneity and subgroup analyses.

Computer therapy for the anxiety and depressive disorders is effective, acceptable and practical health care: a meta-analysis

Background

Depression and anxiety disorders are common and treatable with cognitive behavior therapy (CBT), but access to this therapy is limited.

Objective

Review evidence that computerized CBT for the anxiety and depressive disorders is acceptable to patients and effective in the short and longer term.

Method

Systematic reviews and data bases were searched for randomized controlled trials of computerized cognitive behavior therapy versus a treatment or control condition in people who met diagnostic criteria for major depression, panic disorder, social phobia or generalized anxiety disorder. Number randomized, superiority of treatment versus control (Hedges g) on primary outcome measure, risk of bias, length of follow up, patient adherence and satisfaction were extracted.

Principal Findings

22 studies of comparisons with a control group were identified. The mean effect size superiority was 0.88 (NNT 2.13), and the benefit was evident across all four disorders. Improvement from computerized CBT was maintained for a median of 26 weeks follow-up. Acceptability, as indicated by adherence and satisfaction, was good. Research probity was good and bias risk low. Effect sizes were non-significantly higher in comparisons with waitlist than with active treatment control conditions. Five studies comparing computerized CBT with traditional face-to-face CBT were identified, and both modes of treatment appeared equally beneficial.

Conclusions

Computerized CBT for anxiety and depressive disorders, especially via the internet, has the capacity to provide effective acceptable and practical health care for those who might otherwise remain untreated.

Trial Registration

Australian New Zealand Clinical Trials Registry ACTRN12610000030077

The efficacy of internet interventions for depression and anxiety disorders: a review of randomised controlled trials

OBJECTIVE

To review the outcomes, nature and quality of published randomised controlled trials of preventive and treatment internet interventions for depression and anxiety disorders, and to document the availability of effective interventions.

DATA SOURCES

Previous reviews of internet interventions for mental health and related conditions were updated using an extension of the original methodology. All studies included in the original reviews and more recent eligible trials (published before June 2009) were included, together with any trials identified from a search of the health intervention web portal Beacon and the Journal of Medical Internet Research.

STUDY SELECTION

A total of 29 reports describing 26 trials satisfied the inclusion criteria.

DATA SYNTHESIS

All trials employed a cognitive behaviour therapy intervention program. Of the 26 trials, 23 demonstrated some evidence of effectiveness relative to controls. Effect size differences ranged from 0.42 to 0.65 for depression interventions involving participants with clinically significant symptoms of depression, and 0.29 to 1.74 for anxiety interventions involving participants with a diagnosed anxiety disorder. Of the five effective English-language programs, three are available to the public without charge and two can be accessed at a small cost through health practitioner referral.

CONCLUSION

Internet interventions for depression and anxiety disorders offer promise for use as self-help applications for consumers or as an adjunct to usual care.

Psychological treatment of depressive symptoms in patients with medical disorders: a meta-analysis

OBJECTIVE

It is widely acknowledged that the prevalence of depression in the general population is high, but that it is even higher for patients with medical disorders. Yet, the effectiveness of psychological treatments in these patient populations has not been firmly established.

METHODS

We conducted a meta-analysis of randomized controlled studies examining the effects of psychological treatments in patients with 1 of 10 different medical disorders and elevated levels of depression. Extensive searches were performed in PubMed, PsycINFO, Embase, and the Cochrane Central Register of Controlled Trials.

RESULTS

We included 23 studies. The overall effect size of the 15 studies that compared psychological treatments with a waitlist or care-as-usual control group was d=1.00 [95% confidence interval (CI), 0.57-1.44] but declined to d=0.42 (95% CI, 0.27-0.58) after removing two outliers with extremely high effects. We tested the type of disorder, inclusion based on diagnostic criteria or symptoms, type of treatment, treatment format, type of control group, and intention-to-treat or completers analyses, but none of these variables were significantly associated with the effect. The four studies that compared one type of psychotherapy to another showed a positive effect of cognitive behavioral therapy and interpersonal therapy compared to supportive therapy (d=0.42; 95% CI, 0.14-0.69). There were not enough studies (n=3) to draw any conclusions about the comparison of psychotherapy to pharmacotherapy.

CONCLUSION

We conclude that the effects of psychological treatment of patients with medical disorders are very similar to those found in otherwise healthy patients. Treating this comorbid depression should be one of the priorities in medical care settings.

Internet-based and other computerized psychological treatments for adult depression: a meta-analysis

Computerized and, more recently, Internet-based treatments for depression have been developed and tested in controlled trials. The aim of this meta-analysis was to summarize the effects of these treatments and investigate characteristics of studies that may be related to the effects. In particular, the authors were interested in the role of personal support when completing a computerized treatment. Following a literature search and coding, the authors included 12 studies, with a total of 2446 participants. Ten of the 12 studies were delivered via the Internet. The mean effect size of the 15 comparisons between Internet-based and other computerized psychological treatments vs. control groups at posttest was d = 0.41 (95% confidence interval [CI]: 0.29-0.54). However, this estimate was moderated by a significant difference between supported (d = 0.61; 95% CI: 0.45-0.77) and unsupported (d = 0.25; 95% CI: 0.14-0.35) treatments. The authors conclude that although more studies are needed, Internet and other computerized treatments hold promise as potentially evidence-based treatments of depression.

The contribution of active medication to combined treatments of psychotherapy and pharmacotherapy for adult depression: a meta-analysis

OBJECTIVE

Although there is sufficient evidence that combined treatments of psychotherapy and pharmacotherapy are more effective for depression in adults than each of the treatments alone, it remains unclear what the exact contribution of active medication is to the overall effects of combined treatments. This paper examines the contribution of active medication to combined psychotherapy and pharmacotherapy treatments.

METHOD

Meta-analysis of randomised controlled trials comparing the combination of psychotherapy and pharmacotherapy with the combination of psychotherapy and placebo.

RESULTS

Sixteen identified studies involving 852 patients met our inclusion criteria. The standardised mean difference indicating the differences between the combination of psychotherapy and pharmacotherapy and the combination of psychotherapy and placebo was 0.25 (95% CI: 0.03-0.46), which corresponds to a numbers-needed-to-be-treated of 7.14. No significant differences between subgroups of studies were found.

CONCLUSION

Active medication has a small but significant contribution to the overall efficacy of combined treatments.

Efficacy of cognitive-behavioural therapy and other psychological treatments for adult depression: meta-analytic study of publication bias

BACKGROUND

It is not clear whether the effects of cognitive-behavioural therapy and other psychotherapies have been overestimated because of publication bias.

AIMS

To examine indicators of publication bias in randomised controlled trials of psychotherapy for adult depression.

METHOD

We examined effect sizes of 117 trials with 175 comparisons between psychotherapy and control conditions. As indicators of publication bias we examined funnel plots, calculated adjusted effect sizes after publication had been taken into account using Duval & Tweedie's procedure, and tested the symmetry of the funnel plots using the Begg & Mazumdar rank correlation test and Egger's test.

RESULTS

The mean effect size was 0.67, which was reduced after adjustment for publication bias to 0.42 (51 imputed studies). Both Begg & Mazumbar's test and Egger's test were highly significant (P<0.001).

CONCLUSIONS

The effects of psychotherapy for adult depression seem to be overestimated considerably because of publication bias.

The effects of psychotherapy for adult depression are overestimated: a meta-analysis of study quality and effect size

BACKGROUND

No meta-analytical study has examined whether the quality of the studies examining psychotherapy for adult depression is associated with the effect sizes found. This study assesses this association.

METHOD

We used a database of 115 randomized controlled trials in which 178 psychotherapies for adult depression were compared to a control condition. Eight quality criteria were assessed by two independent coders: participants met diagnostic criteria for a depressive disorder, a treatment manual was used, the therapists were trained, treatment integrity was checked, intention-to-treat analyses were used, N >or= 50, randomization was conducted by an independent party, and assessors of outcome were blinded.

RESULTS

Only 11 studies (16 comparisons) met the eight quality criteria. The standardized mean effect size found for the high-quality studies (d=0.22) was significantly smaller than in the other studies (d=0.74, p<0.001), even after restricting the sample to the subset of other studies that used the kind of care-as-usual or non-specific controls that tended to be used in the high-quality studies. Heterogeneity was zero in the group of high-quality studies. The numbers needed to be treated in the high-quality studies was 8, while it was 2 in the lower-quality studies.

CONCLUSIONS

We found strong evidence that the effects of psychotherapy for adult depression have been overestimated in meta-analytical studies. Although the effects of psychotherapy are significant, they are much smaller than was assumed until now, even after controlling for the type of control condition used.

The efficacy of a scheduled telephone intervention for ameliorating depressive symptoms during the first year after traumatic brain injury

OBJECTIVE

To determine whether an intervention designed to improve functioning after traumatic brain injury (TBI) also ameliorates depressive symptoms.

DESIGN

Single-blinded, randomized controlled trial comparing a scheduled telephone intervention to usual care.

PARTICIPANTS

One hundred seventy-one persons with TBI discharged from an inpatient rehabilitation unit.

METHODS

The treatment group received up to 7 scheduled telephone sessions over 9 months designed to elicit current concerns, provide information, and facilitate problem solving in domains relevant to TBI recovery.

OUTCOME MEASURES

Brief Symptom Inventory-Depression (BSI-D) subscale, Neurobehavioral Functioning Inventory-Depression subscale, and Mental Health Index-5 from the Short-Form-36 Health Survey.

RESULTS

Baseline BSI-D subscale and outcome data were available on 126 (74%) participants. Randomization was effective except for greater severity of depressive symptoms in the usual care (control) group at baseline. Outcome analyses were adjusted for these differences. Overall, control participants developed greater depressive symptom severity from baseline to 1 year than did the treatment group. The treated group reported significantly lower depression symptom severity on all outcome measures. For those more depressed at baseline, the treated group demonstrated greater improvement in symptoms than did the controls.

CONCLUSIONS

Telephone-based interventions using problem-solving and behavioral activation approaches may be effective in ameliorating depressive symptoms following TBI. Proactive telephone calls, motivational interviewing, and including significant others in the intervention may have contributed to its effectiveness.

Psychological treatment of depression in primary care: a meta-analysis

BACKGROUND

Although most depressive disorders are treated in primary care and several studies have examined the effects of psychological treatment in primary care, hardly any meta-analytic research has been conducted in which the results of these studies are integrated.

AIM

To integrate the results of randomised controlled trials of psychological treatment of depression in adults in primary care, and to compare these results to psychological treatments in other settings.

DESIGN OF STUDY

A meta-analysis of studies examining the effects of psychological treatments of adult depression in primary care.

SETTING

Primary care.

METHOD

An existing database of studies on psychological treatments of adult depression that was built on systematic searches in PubMed, PsychINFO, EMBASE, and Dissertation Abstracts International was used. Randomised trials were included in which the effects of psychological treatments on adult primary care patients with depression were compared to a control condition.

RESULTS

In the 15 included studies, the standardised mean effect size of psychological treatment versus control groups was 0.31 (95% CI = 0.17 to 0.45), which corresponds with a numbers-needed-to-treat (NNT) of 5.75. Studies in which patients were referred by their GP for treatment had significantly higher effect sizes (d = 0.43; NNT = 4.20) than studies in which patients were recruited through systematic screening (d = 0.13, not significantly different from zero; NNT = 13.51).

CONCLUSIONS

Although the number of studies was relatively low and the quality varied, psychological treatment of depression was found to be effective in primary care, especially when GPs refer patients with depression for treatment.

Psychoeducational treatment and prevention of depression: the "Coping with Depression" course thirty years later

The "Coping with Depression" course (CWD) is by the far the best studied psychoeducational intervention for the treatment and prevention of depression, and is used in routine practice in several countries. The CWD is a highly structured cognitive-behavioral intervention, which has been adapted for several goals, contexts, and target populations. The efficacy of the CWD has been examined in 25 randomized controlled trials. We conducted a meta-analysis of these studies. The 6 studies aimed at the prevention of new cases of major depression were found to result in a reduced risk of getting major depression of 38% (incidence rate ratio was 0.62). The 18 studies examining the CWD as a treatment of depression found a mean effect size (Cohen's d) of 0.28. Direct comparisons with other psychotherapies did not result in any indication that the CWD was less efficacious. The CWD is a flexible treatment which can easily be adapted for different populations and this may have led researchers to use this intervention for complex target groups, which in turn may have resulted in a lower mean effect size. The CWD has contributed considerably to the development and innovation of prevention and treatment of depression in many target populations.