Randomized Clinical Trial of an Internet-Based Adolescent Depression Prevention Intervention in Primary Care: Internalizing Symptom Outcomes

Effectiveness of internet-based self-help interventions for depression in adolescents and young adults: a systematic review and meta-analysis

OBJECTIVE

To assess the effectiveness of Internet-based self-help interventions in treating depression in adolescents and young adults.

METHODS

A systematic search was conducted across six databases, including PubMed, to identify randomized controlled trials (RCTs) that satisfied the specified inclusion and exclusion criteria. The intervention measure consisted of Internet-based self-help interventions.

RESULTS

A total of 23 randomized controlled trials (RCTs) were included in this analysis. Meta-analysis indicated that Internet-based self-help therapies significantly reduced depression scores in adolescents and young adults. (OR = -0.68, 95%CI [-0.88, -0.47], P < 0.001). We examined the effects of patient recruitment from various regions, medication usage, therapist involvement, weekly intervention time, and intervention duration. Patients selected from school, primary healthcare centers, clinics and local communities had better results. Intervention lasting 30 to 60 min and 60 to180 minutes per week were effective in the short term.

CONCLUSION

The internet-based self-help intervention can be effective in treating depression in adolescents and young adults. However, factors such as patient recruitment locations, medication usage, Therapists' involvement, weekly intervention time, and intervention duration interacted with the outcome. Subgroup analysis on potential adverse effects and gender was impossible due to insufficient data from the included studies.

Parents' clinical depression and children's problem behaviors: A multi-level meta-analytic examination

BACKGROUND

Previous meta-analyses considering associations between parental depression (PD) and child symptoms have considered PD based primarily on self-report of depression symptoms. The present meta-analysis, in contrast, evaluated the effect of parents' clinically-diagnosed depressive disorders (PDD) on child internalizing and externalizing symptoms and considered both family- and study-level variables that influenced the strength of these effects.

METHODS

We examined 111 effect sizes nested in 40 studies including a clinical assessment of parents' major or persistent depressive disorder and measures of children's internalizing or externalizing behaviors published between 2000 and 2020. We used a multi-level meta-analytic framework to account for nesting of multiple effect sizes within studies.

RESULTS

PDD was associated with children's internalizing (weighted mean r = 0.211) and externalizing (weighted mean r = 0.204) behaviors. Family- and study-level variables moderated these relations, including the inclusion of fathers in the sample, the specific measure of internalizing behavior, reporting of diagnostic reliability, and informant for problem behaviors.

LIMITATIONS

Limitations include exclusive consideration of internalizing and externalizing symptoms (versus other symptom types or problems) and the limited number of father-only studies from which to base conclusions about the relative effect of maternal vs. paternal depression.

CONCLUSIONS

The similarity between the current findings and previous meta-analyses suggests that researchers studying the effects of PD may be able to bypass more exhaustive clinical interviews for less burdensome depression symptom inventories. Furthermore, our findings suggest that researchers and clinicians should consider how PD impacts not just child depressive symptoms, but myriad problem behaviors.

Hippocampal Crhr1 conditional gene knockout ameliorated the depression-like behavior and pathological damage in male offspring mice caused by chronic stress during pregnancy

Numerous studies have demonstrated that chronic stress during pregnancy (CSDP) can induce depression and hippocampal damage in offspring. It has also been observed that high levels of corticotropin-releasing hormone (CRH) can damage hippocampal neurons, and intraperitoneal injection of a corticotropin releasing hormone receptor 1 (CRHR1) antagonist decreases depression-like behavior and hippocampal neuronal damage in a mouse depression model. However, whether CSDP causes hippocampal damage and depression in offspring through the interaction of CRH and hippocampal CRHR1 remains unknown and warrants further investigation. Therefore, hippocampal Crhr1 conditional gene knockout mice and C57/BL6J mice were used to study these questions. Depression-related indexs in male offspring mice were examined using the forced swim test (FST), sucrose preference test (SPT), tail suspension test (TST) and open field test (OFT). Serum CRH levels were measured by enzyme-linked immunosorbent assay (ELISA). Golgi-Cox staining was used to examine the morphological changes of hippocampal neuronal dendrites. Neuronal apoptosis in the hippocampal CA3 regions was detected by terminal deoxynucleotidy transferase dUTP nick end labeling (TUNEL) staining. The levels of mammalian target of rapamycin (mTOR), phosphorylated mTOR (p-mTOR) and protein kinase B (AKT) proteins were measured by Western blot analysis. This study showed that CSDP induces depression-like behavior, hippocampal neuronal dendrite damage and apoptosis in male offspring mice. Conditional gene knockout of hippocampal Crhr1 in mice reduced CSDP-induced depression-like behavior, hippocampal neuronal dendrite damage and apoptosis in male offspring, and counteracted the CSDP-induced decreased expression of p-Akt and mTOR activity in male offspring hippocampus. These findings demonstrated that CSDP might inhibit the Akt/mTOR pathway by increasing the levels of CRH, leading to increased CRH-mediated activation of hippocampal CRHR1, thereby inducing synaptic impairment and apoptosis in hippocampal neurons, which in turn leads to depression-like behavior in offspring.

Heterogeneity of Treatment Effects in Internet- and Mobile-Based Interventions for Depression: A Systematic Review and Meta-Analysis

Importance

While the effects of internet- and mobile-based interventions (IMIs) for depression have been extensively studied, no systematic evidence is available regarding the heterogeneity of treatment effects (HTEs), indicating to what extent patient-by-treatment interactions exist and personalized treatment models might be necessary.

Objective

To investigate the HTEs in IMIs for depression as well as their efficacy and effectiveness.

Data Sources

A systematic search in Embase, MEDLINE, Central, and PsycINFO for randomized clinical trials and supplementary reference searches was conducted on October 13, 2019, and updated March 25, 2022. The search string included various terms related to digital psychotherapy, depression, and randomized clinical trials.

Study Selection

Titles, abstracts, and full texts were reviewed by 2 independent researchers. Studies of all populations with at least 1 intervention group receiving an IMI for depression and at least 1 control group were eligible, if they assessed depression severity as a primary outcome and followed a randomized clinical trial (RCT) design.

Data Extraction and Synthesis

This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses reporting guidelines. Risk of bias was evaluated using the Cochrane Risk of Bias Tool. HTE was investigated using logarithmic variance ratios (lnVR) and effect sizes using Hedges g. Three-level bayesian meta-regressions were conducted.

Main Outcomes and Measures

Heterogeneity of treatment effects was the primary outcome of this study; magnitudes of treatment effect sizes were the secondary outcome. Depression severity was measured by different self-report and clinician-rated scales in the included RCTs.

Results

The systematic review of 102 trials included 19 758 participants (mean [SD] age, 39.9 [10.58] years) with moderate depression severity (mean [SD] in Patient Health Questionnaire-9 score, 12.81 [2.93]). No evidence for HTE in IMIs was found (lnVR = -0.02; 95% credible interval [CrI], -0.07 to 0.03). However, HTE was higher in more severe depression levels (β̂ = 0.04; 95% CrI, 0.01 to 0.07). The effect size of IMI was medium (g = -0.56; 95% CrI, -0.46 to -0.66). An interaction effect between guidance and baseline severity was found (β̂ = -0.24, 95% CrI, -0.03 to -0.46).

Conclusions and Relevance

In this systematic review and meta-analysis of RCTs, no evidence for increased patient-by-treatment interaction in IMIs among patients with subthreshold to mild depression was found. Guidance did not increase effect sizes in this subgroup. However, the association of baseline severity with HTE and its interaction with guidance indicates a more sensitive, guided, digital precision approach would benefit individuals with more severe symptoms. Future research in this population is needed to explore personalization strategies and fully exploit the potential of IMI.

A comparison of the effectiveness of cognitive behavioural interventions based on delivery features for elevated symptoms of depression in adolescents: A systematic review

Background

Depression is a public health problem and common amongst adolescents. Cognitive behavioural therapy (CBT) is widely used to treat adolescent depression but existing research does not provide clear conclusions regarding the relative effectiveness of different delivery modalities.

Objectives

The primary aim is to estimate the relative efficacy of different modes of CBT delivery compared with each other and control conditions for reducing depressive symptoms in adolescents. The secondary aim is to compare the different modes of delivery with regard to intervention completion/attrition (a proxy for intervention acceptability).

Search Methods

The Cochrane Depression, Anxiety and Neurosis Clinical Trials Register was searched in April 2020. MEDLINE, PsycInfo, EMBASE, four other electronic databases, the CENTRAL trial registry, Google Scholar and Google were searched in November 2020, together with reference checking, citation searching and hand-searching of two databases.

Selection Criteria

Randomised controlled trials (RCTs) of CBT interventions (irrespective of delivery mode) to reduce symptoms of depression in young people aged 10-19 years with clinically relevant symptoms or diagnosis of depression were included.

Data Collection and Analysis

Screening and data extraction were completed by two authors independently, with discrepancies addressed by a third author. CBT interventions were categorised as follows: group CBT, individual CBT, remote CBT, guided self-help, and unguided self-help. Effect on depressive symptom score was estimated across validated self-report measures using Hedges' g standardised mean difference. Acceptability was estimated based on loss to follow-up as an odds ratio. Treatment rankings were developed using the surface under the cumulative ranking curve (SUCRA). Pairwise meta-analyses were conducted using random effects models where there were two or more head-to-head trials. Network analyses were conducted using random effects models.

Main Results

Sixty-eight studies were included in the review. The mean age of participants ranged from 10 to 19.5 years, and on average 60% of participants were female. The majority of studies were conducted in schools (28) or universities (6); other settings included primary care, clinical settings and the home. The number of CBT sessions ranged from 1 to 16, the frequency of delivery from once every 2 weeks to twice a week and the duration of each session from 20 min to 2 h. The risk of bias was low across all domains for 23 studies, 24 studies had some concerns and the remaining 21 were assessed to be at high risk of bias. Sixty-two RCTs (representing 6435 participants) were included in the pairwise and network meta-analyses for post-intervention depressive symptom score at post-intervention. All pre-specified treatment and control categories were represented by at least one RCT. Although most CBT approaches, except remote CBT, demonstrated superiority over no intervention, no approaches performed clearly better than or equivalent to another. The highest and lowest ranking interventions were guided self-help (SUCRA 83%) and unguided self-help (SUCRA 51%), respectively (very low certainty in treatment ranking). Nineteen RCTs (3260 participants) were included in the pairwise and network meta-analyses for 6 to 12 month follow-up depressive symptom score. Neither guided self-help nor remote CBT were evaluated in the RCTs for this time point. Effects were generally attenuated for 6- to 12-month outcomes compared to posttest. No interventions demonstrated superiority to no intervention, although unguided self-help and group CBT both demonstrated superiority compared to TAU. No CBT approach demonstrated clear superiority over another. The highest and lowest ranking approaches were unguided self-help and individual CBT, respectively. Sixty-two RCTs (7347 participants) were included in the pairwise and network meta-analyses for intervention acceptability. All pre-specified treatment and control categories were represented by at least one RCT. Although point estimates tended to favour no intervention, no active treatments were clearly inferior. No CBT approach demonstrated clear superiority over another. The highest and lowest ranking active interventions were individual CBT and group CBT respectively. Pairwise meta-analytic findings were similar to those of the network meta-analysis for all analyses. There may be age-based subgroup effects on post-intervention depressive symptoms. Using the no intervention control group as the reference, the magnitudes of effects appear to be larger for the oldest age categories compared to the other subgroups for each given comparison. However, they were generally less precise and formal testing only indicated a significant difference for group CBT. Findings were robust to pre-specified sensitivity analyses separating out the type of placebo and excluding cluster-RCTs, as well as an additional analysis excluding studies where we had imputed standard deviations.

Authors' Conclusions

At posttreatment, all active treatments (group CBT, individual CBT, guided self-help, and unguided self-help) except for remote CBT were more effective than no treatment. Guided self-help was the most highly ranked intervention but only evaluated in trials with the oldest adolescents (16-19 years). Moreover, the studies of guided self-help vary in the type and amount of therapist support provided and longer-term results are needed to determine whether effects persist. The magnitude of effects was generally attenuated for 6- to 12-month outcomes. Although unguided self-help was the lowest-ranked active intervention at post-intervention, it was the highest ranked at follow-up. This suggests the need for further research into whether interventions with self-directed elements enable young people to maintain effects by continuing or revisiting the intervention independently, and whether therapist support would improve long-term outcomes. There was no clear evidence that any active treatments were more acceptable to participants than any others. The relative effectiveness of intervention delivery modes must be taken into account in the context of the needs and preferences of individual young people, particularly as the differences between effect sizes were relatively small. Further research into the type and amount of therapist support that is most acceptable to young people and most cost-effective would be particularly useful.

Long-term effects of psychosocial interventions for adolescents on depression and anxiety: a systematic review and meta-analysis

Background

Adolescence represents a distinctive phase of development, and variables linked to this developmental period could affect the efficiency of prevention and treatment for depression and anxiety, as well as the long-term prognosis. The objectives of this study were to investigate the long-term effectiveness of psychosocial interventions for adolescents on depression and anxiety symptoms and to assess the influence of different intervention parameters on the long-term effects.

Methods

In this systematic review and meta-analysis, we searched five databases (Cochrane Library, Embase, Medline, PsychInfo, Web of Science) and trial registers for relevant papers published between database inception and Aug 11, 2022, with no restrictions on the language or region in which the study was conducted. An updated search was performed on Oct 3, 2023. Randomised controlled trials of psychosocial interventions targeting specifically adolescents were included if they assessed outcomes at 1-year post-intervention or more. The risk of bias in the results was assessed using the Cochrane RoB 2.0. Between-study heterogeneity was estimated using the I2 statistic. The primary outcome was depression and studies were pooled using a standardised mean difference, with associated 95% confidence interval, p-value and I2. The study protocol was pre-registered on PROSPERO (CRD42022348668).

Findings

57 reports (n = 46,678 participants) were included in the review. Psychosocial interventions led to small reductions in depressive symptoms, with standardised mean difference (SMD) at 1-year of -0.08 (95% CI: -0.20 to -0.03, p = 0.002, I2 = 72%), 18-months SMD = -0.12, 95% CI: -0.22 to -0.01, p = 0.03, I2 = 63%) and 2-years SMD = -0.12 (95% CI: -0.20 to -0.03, p = 0.01, I2 = 68%). Sub-group analyses indicated that targeted interventions produced stronger effects, particularly when delivered by trained mental health professionals (K = 18, SMD = -0.24, 95% CI: -0.38 to -0.10, p = 0.001, I2 = 60%). No effects were detected for anxiety at any assessment.

Interpretation

Psychosocial interventions specifically targeting adolescents were shown to have small but positive effects on depression symptoms but not anxiety symptoms, which were sustained up to 2 years. These findings highlight the potential population-level preventive effects if such psychosocial interventions become widely implemented in accessible settings, such as schools. Future trials should include a longer term-follow-up at least at 12 months, in order to determine whether the intervention effects improve, stay the same or wear off over time.

Funding

UKRIMedical Research Council.

Appropriate Use and Operationalization of Adherence to Digital Cognitive Behavioral Therapy for Depression and Anxiety in Youth: Systematic Review

BACKGROUND

Digital, self-guided cognitive behavioral therapy (CBT) interventions circumvent many barriers to in-person therapy for young people (aged 12-24 years), although adherence to these interventions is low. The absence or insufficient disclosure of recommendations or instructions for appropriate use may account for this. As such, many young people may not self-administer these interventions appropriately or receive the optimal degree of treatment.

OBJECTIVE

This systematic review aims to synthesize the literature on digital CBT for depression and anxiety in young people to describe how appropriate use has been defined and communicated to users as instructions for use, to describe how adherence has been measured, and to determine the associations between adherence and treatment outcomes.

METHODS

A systematic review was conducted with 2 reviewers (SHL and MRA) extracting data independently. Overall, 4 electronic databases (Embase, MEDLINE, PsycINFO, and Cochrane Library) were searched in April 2021 for studies that met the following inclusion criteria: participants aged between 12 and 24 years, evaluated a digital CBT intervention targeting depression or anxiety, and reported instructions or recommendations for use or measures of adherence. Studies that evaluated non-CBT interventions or cognitive- or behavioral-only interventions were excluded. Methodological quality was assessed using the Cochrane Risk of Bias Tool and the Integrated Quality Criteria for the Review of Multiple Study Designs.

RESULTS

There were 32 manuscripts that met the inclusion criteria, of which 28 (88%) were unique studies (N=16,578 youths). Definitions of appropriate use varied among the different interventions in terms of intended recipients, duration and frequency of use, and the features used to support engagement and adherence to appropriate use definitions. Reporting of appropriate use definitions in studies was inconsistent, with no study systematically describing components of appropriate use or providing information on how recommendations for use were relayed to users. Most often, definitions of appropriate use were derived from the study protocol and descriptions of intervention features. Adherence was mostly operationalized as the degree of intervention completion; however, reporting of adherence data was heterogeneous. There was little evidence of an association between degree of use and outcomes in the 9 studies that examined this.

CONCLUSIONS

Definitions of appropriate use are unique to each digital CBT intervention. However, statements of appropriate use are not systematically reported in the literature. Furthermore, the extent to which recommendations for use are communicated to users is not routinely reported. Despite unique definitions of appropriate use, adherence was most often generically operationalized as the degree of intervention completion and was not consistently associated with outcomes. We proposed a framework to promote systematic reporting of definitions of appropriate use for digital interventions to provide guidance to users and to assist the development of appropriate and nuanced measures of adherence.

TRIAL REGISTRATION

PROSPERO CRD42020208668; https://tinyurl.com/4bu2yram.

Detection and treatment of depressive disorder in the spanish health system: a critical review

Health care for depression is a major challenge. The aim of this review is to capture the status of the detection, diagno- sis and treatment of depression in the Spanish public health system. The data from the latest National Health Survey (ENSE 2017) have been analyzed and a non-systematic search for publications has been carried out in the PubMed and Scopus databases. We highlight the high specificity and low sensitivity in the detection of cases of major depression by Primary Care (PC) physicians in Spain. The detection of depression is supe- rior in specialized care compared to PC. The new healthcare systems based on the shared approach and the hierarchical model of screening, diagnosis and referral are reviewed and we present improvement proposals based on various programs and models of healthcare for depression.

Are online mental health interventions for youth effective? A systematic review

OBJECTIVES

This systematic review aims to examine the effectiveness of online mental health interventions for youth.

METHODS

We searched seven electronic databases (PubMed, PsycINFO, Medline, Embase, CINAHL, Web of Science and SCOPUS) for the past 10 years to identify randomized controlled trials which have evaluated the use of telehealth interventions for young people with mental health problems. The included studies were assessed for quality and risk of bias.

RESULTS

Forty-five randomized controlled trials (n = 13,291 participants) were eligible for this review. Most studies (35 trials) evaluated the use of web-based self-help platforms to deliver cognitive behavioural therapy (14 trials), mindfulness (four trials), acceptance commitment therapy (five trials) and positive psychology (two trials). Mobile/computer applications were used to deliver cognitive behavioural therapy (four trials) and coping strategies training (two trials). Web-based synchronous chat (one trial) was used to assist communication between counsellors and participants. Three studies used artificial intelligence-based conversational agents to deliver cognitive behavioural therapy (two trials) and problem-solving-strategy training (one trial). Eighty-two percent (n = 37) identified the participants as student population (i.e. university students, high school students). Sixty-four percent (n = 29) of the telehealth interventions were found to be effective in managing depression, anxiety, stress, insomnia and improving quality of life when compared with control conditions.

CONCLUSIONS

Online mental health interventions were found to be effective in managing diverse mental health conditions among youth. Online self-help platforms were the most frequently used modality and artificial intelligence-based chatbots are merging as potential solutions. Future research is warranted to investigate the solutions to improve the retention rate and satisfaction of telehealth interventions among this population.

Updates in treatment of depression in children and adolescents

PURPOSE OF REVIEW

To examine recent evidence that informs the treatment of depression in children and adolescents.

RECENT FINDINGS

There are no new leads in the prevention and early intervention of depression in children and adolescents. For acute treatment of major depressive disorder, talking therapies are moving increasingly to internet-based platforms. Family therapy may have a slight edge over individual psychotherapy in the short-term. Patients with severe depression with endogenous features have a more robust response to pharmacotherapy than do patients with mild-to-moderate depression. Findings in relation to reward sensitivity and changes in brain-derived neurotrophic factor levels contradict research conducted in adults, suggesting developmental differences in the mechanisms underlying depression. Ketamine infusion could have a role for adolescents with treatment refractory depression. There was no new evidence concerning relapse prevention.

SUMMARY

Most new findings have been concerned with moderators and mediators of treatment.

Adaptation of an Evidence-Based Online Depression Prevention Intervention for College Students: Intervention Development and Pilot Study Results

College and university students across the United States are experiencing increases in depressive symptoms and risk for clinical depression. As college counseling centers strive to address the problem through wellness outreach and psychoeducation, limited resources make it difficult to reach students who would most benefit. Technology-based prevention programs have the potential to increase reach and address barriers to access encountered by students in need of mental health support. Part 1 of this manuscript describes the development of the Willow intervention, an adaptation of the technology-based CATCH-IT depression prevention intervention using a community participatory approach, for use by students at a women’s liberal arts college. Part 2 presents data from a pilot study of Willow with N = 34 (mean age = 19.82, SD = 1.19) students. Twenty-nine participants (85%) logged onto Willow at least once, and eight (24%) completed the full intervention. Participants positively rated the acceptability, appropriateness, and feasibility of Willow. After eight weeks of use, results suggested decreases in depressive symptoms (95% CI (0.46–3.59)), anxiety symptoms (95% CI (0.41–3.04)), and rumination (95% CI (0.45–8.18)). This internet-based prevention intervention was found to be acceptable, feasible to implement, and may be associated with decreased internalizing symptoms.

Randomized Clinical Trial of Primary Care Based Online Depression Prevention Intervention: Impact on Adolescent Modifiable Factors and Behaviors

The developmental period of adolescence can pose a risk for the onset of depressive disorders, but is also a time when potentially modifiable factors and behaviors related to depressive episode onset can develop. An online health intervention can provide an opportunity to reach at-risk adolescents in between primary care visits and could impact these modifiable factors and behaviors to support healthy development. We explore the Competent Adulthood Transition with Cognitive-Behavioral, Humanistic, and Interpersonal Therapy (CATCH-IT), a self-directed online cognitive behavioral therapy prevention intervention, and its impact on modifiable factors and behaviors related to: (1) program completion, (2) normative adolescent development, (3) coping, (4) family relations, (5) general health behaviors, and (6) externalizing behaviors, in a primary care sample of adolescents at intermediate to high risk of developing depression. Adolescents were enrolled into either CATCH-IT or Health Education (HE) control group and followed for 24 months. CATCH-IT improved some factors related to program completion (e.g., motivation, recommendation to peers for depression prevention, and physician positive relationship), coping (e.g., perceived behavior change), and family relations (e.g., parental psychological control, sibling relative status) as compared to HE. HE improved normative adolescent development (e.g., health and loss life events) as compared to CATCH-IT. CATCH-IT utilized in primary care may benefit some at-risk adolescents in selective factors and behaviors.

Feasibility and Acceptability of "Cuida tu Ánimo" (Take Care of Your Mood): An Internet-Based Program for Prevention and Early Intervention of Adolescent Depression in Chile and Colombia

The rapid internet penetration in Latin American countries has made it possible to implement digital mental health interventions. “Cuida tu Ánimo” (Take Care of Your Mood) is an internet-based program for the prevention and early intervention of depression in adolescents. A pilot study was conducted in Chile and Colombia to study the feasibility and acceptability of the program and estimate its effects. There were 199 participants (53.3% women; mean age = 14.8 years, SD = 1.0) recruited from two schools in Chile and two schools in Colombia. Qualitative and quantitative methods were applied for data collection and analyses. Although the levels of acceptance were moderate to high across all variables, adherence was lower than expected. The participants deemed important for an intervention of this type offered a higher level of interaction with team members through internet-based and face-to-face activities. Post-intervention outcomes show a reduction in depressive and anxious symptoms in adolescents in Chile, while there were no significant changes in the level of symptomatology in adolescents in Colombia. The women used the program more than the men. Results show the need to improve the intervention by increasing its levels of customization and developing strategies to achieve better adherence. The contradictory results of the program in Chile and Colombia suggest the importance of other variables beyond the content of the intervention, such as the setting or context of the intervention.

Depressive and anxiety disorders in concert-A synthesis of findings on comorbidity in the NESDA study

BACKGROUND

Comorbidity of depressive and anxiety disorders is common and remains incompletely comprehended. This paper summarizes findings from the Netherlands Study of Depression and Anxiety (NESDA) regarding prevalence, temporal sequence, course and longitudinal patterns; sociodemographic, vulnerability and neurobiological indicators; and functional, somatic and mental health indicators of comorbidity.

METHODS

Narrative synthesis of earlier NESDA based papers on comorbidity (n=76).

RESULTS

Comorbidity was the rule in over three-quarter of subjects with depressive and/or anxiety disorders, most often preceded by an anxiety disorder. Higher severity and chronicity characterized a poorer comorbidity course. Over time, transitions between depressive and anxiety disorders were common. Consistent comorbidity risk indicators in subjects with depressive and anxiety disorders were childhood trauma, neuroticism and early age of onset. Psychological vulnerabilities, such as trait avoidance tendencies, were more pronounced in comorbid than in single disorders. In general, there were few differences in biological markers and neuroimaging findings between persons with comorbid versus single disorders. Most functional, somatic, and other mental health indicators, ranging from disability to cardiovascular and psychiatric multimorbidity, were highest in comorbid disorders.

LIMITATIONS

The observational design of NESDA limits causal inference. Attrition was higher in comorbid relative to single disorders.

CONCLUSIONS

As compared to single disorders, persons with comorbid depressive and anxiety disorders were characterized by more psychosocial risk determinants, more somatic and other psychiatric morbidities, more functional impairments, and poorer outcome. These results justify specific attention for comorbidity of depressive and anxiety disorders, particularly in treatment settings.

Italia Ti Ascolto [Italy, I am listening]: an app-based group psychological intervention during the COVID-19 pandemic

The onset of the coronavirus disease 2019 (COVID-19) pandemic impacted individuals' psychological wellbeing resulting in heightened perceived stress, anxiety, and depression. However, a significant issue in accessing psychological care during a lockdown is the lack of access to in-person interventions. In this regard, research has shown the efficacy and utility of psychological app-based interventions. 'Italia Ti Ascolto' (ITA) has been developed as a population tailored internet-based intervention to offer an online professional solution for psychological support needs. The ITA app is available on iOS and Android systems. Users completed a baseline assessment on emotion regulation strategies (cognitive reappraisal and expressive suppression), psychological stress, anxiety, depression, and perceived social support. Participants could select among several one-hour long clinical groups held by expert psychotherapists. After every session, people were asked to complete a quick users' satisfaction survey. Our contribution presents ITA's intervention protocol and discusses preliminary data on psychological variables collected at baseline. Data showed significant associations between emotion regulation strategies, symptoms of depression and anxiety, and level of stress. Moreover, the role of perceived social support is considered. Future developments and implications for clinical practice and treatment are discussed.