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The role of parents' early life maltreatment (ELM) (e.g. physical, sexual abuse) and related experiences, in relation to offspring anxiety is not well understood. The current study investigated the association between self-reported depression and ELM and related experiences in mothers (n = 79) and fathers (n = 50), and mother-, father-, and youth-reported symptoms of youth anxiety (n = 90). Outcomes were assessed at pre,- and posttreatment and 3-, 6-, and 12-months follow-up. Parental ELM were not associated with pre-treatment differences or differences in outcome of treatment. However ELM related experiences were associated with increased mother-, father-, and youth-rated youth anxiety at pretreatment. Fathers depressive symptoms were found to mediate the relationship between father ELM related experiences and father-rated youth anxiety symptoms. Future research is warranted on parental ELM and depression as factors affecting outcomes of treatment of youth anxiety. Trial registered at: helseforskning.etikkom.no (reg. nr. 2017/1367).

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There is limited knowledge on how caring contexts impact young adults providing informal care for persons with chronic conditions. This study examines associations between outcomes in young adult carers (YACs) and type of relationship (e.g., close or distant family member, partner, or someone outside the family) and type of illness in the care-receiver (e.g., mental, physical illness/disability, or substance abuse). A total of 37,731 students (age 18-25, mean 22.3 years, 68% females) in higher education in Norway completed a national survey on care responsibilities, hours of daily caring, relationship and type of illness, mental health problems (Hopkins Symptoms Checklist-25) and life satisfaction (Satisfaction With Life Scale). More mental health problems and lower life satisfaction were found among YACs compared to students without care responsibilities. The poorest outcomes were reported by YACs caring for a partner, followed by YACs caring for a close relative. Hours spent on daily caring was highest when caring for a partner. Poorer outcomes were reported by YACs caring for someone affected by substance abuse, followed by mental health problems and physical illness/disability. At-risk groups among YACs should be acknowledged and offered support. Future studies are needed to investigate the potential mechanism for the associations between care context variables and YAC outcomes.

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The present study investigated therapist adherence, therapist competence, and patient-therapist alliance as predictors of long-term outcomes of cognitive behavioral therapy (CBT) for anxiety disorders in youth. Potential differential effects for group versus individual CBT, for therapists with or without formal CBT training, and based on youth symptom severity were examined. Videotapes (n = 181) from treatment sessions in a randomized controlled effectiveness trial comprising youth (N = 170, M age = 11.6 years, SD = 2.1) with anxiety disorders were assessed for therapist adherence and competence. Alliance was rated by therapists and youth. Participants completed a diagnostic interview and an anxiety symptom measure at pre-treatment, post-treatment, one-year follow-up, and long-term follow-up (M = 3.9 years post-treatment, SD = 0.8, range = 2.2-5.9 years). The change in anxiety symptoms or diagnostic status from pre-treatment to long-term follow-up was not significantly related to any predictor variables. However, several interaction effects were found. For loss of principal diagnosis, therapist competence predicted positive outcome when therapist adherence also was high. Adherence was found to predict positive outcome if CBT was provided individually. Therapist-rated alliance was related to both loss of principal diagnosis and loss of all diagnoses when CBT was provided in groups. Interaction effects suggested that therapists displaying both high adherence and high competence produced better long-term outcomes. Further, the alliance may be particularly important for outcomes in group CBT, whereas adherence may be particularly important for outcomes in individual CBT.

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BACKGROUND: Young adults (18-25 years) with informal care responsibilities have received limited attention in the research literature, and little is known on how caring responsibilities are related to functioning across different life domains. In the present study we examine associations between care responsibilities and study progress, recreational life, and loneliness in young adults in higher education. METHODS: A national survey was conducted among Norwegian students in higher education (the SHoT2018-study). The response rate was 30.8%. The current sample is a subsample of the respondents, including young adults 18 to 25 years old, comprising 40.205 participants (70.2% women, mean age 22.0 years, SD = 1.7). Participants reported whether they had regular care responsibility for someone with physical or mental illness, disabilities, or substance misuse. They also answered questions on study progress, number of hours studying, physical exercise, involvement in organized volunteer student activities, number of close friends, and feelings of loneliness. Data were analyzed by Chi-square tests and logistic regression analyses, adjusting for age, sex, and chronic illness. RESULTS: Compared to students without care responsibility, young adult carers (n = 2228, 5.5% of study sample) were more likely to report delayed study progress (OR 1.20, p < .001), higher average number of failed exams (e.g., having failed three times or more, OR 1.31, p = .002), more feelings of loneliness (OR 1.26, p < .001), and slightly fewer friends. Those with limited care responsibility (≤ 1 h daily) were more likely to participate in organized volunteer student activities, whereas students with 2 h or more of caring per day were less likely to participate in leisure student activities. Both study progress and feelings of loneliness were related to care responsibility in a response-dose pattern, with worse outcomes for those with 2 h or more of daily caring responsibility. All comparisons were adjusted for age, sex, and chronic illness. CONCLUSIONS: Study progress, recreational activities, and loneliness among young adults are associated with informal caring responsibilities. Professionals in the educational system as well as health personnel should be sensitized to the needs of young adult carers and necessary support made available.

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The potential effect of early intervention for anxiety on sleep outcomes was examined in a sample of adolescents with anxiety (N = 313, mean 14.0 years, SD = 0.84, 84% girls, 95.7% Norwegians). Participants were randomized to one of three conditions: a brief or a standard-length cognitive-behavioral group-intervention (GCBT), or a waitlist control-group (WL). Interventions were delivered at schools, during school hours. Adolescents with elevated anxiety were recruited by school health services. Questionnaires on self-reported anxiety symptoms, depressive symptoms, and sleep characteristics were administered at pre- and post-intervention, post-waitlist, and at 1-year follow-up. Adolescents reported reduced insomnia (odds ratio (OR) = 0.42, p < 0.001) and shorter sleep onset latency (d = 0.27, p <  0.001) from pre- to post-intervention. For insomnia, this effect was maintained at 1-year follow-up (OR = 0.54, p = 0.020). However, no effect of GCBT on sleep outcomes was found when comparing GCBT and WL. Also, no difference was found in sleep outcomes between brief and standard-length interventions. Adolescents defined as responders (i.e., having improved much or very much on anxiety after GCBT), did not differ from non-responders regarding sleep outcomes. Thus, anxiety-focused CBT, delivered in groups, showed no effect on sleep outcomes. Strategies specifically targeting sleep problems in adolescents should be included in GCBT when delivered as early intervention for adolescents with elevated anxiety.Trial registry Clinical trial registration: School Based Low-intensity Cognitive Behavioral Intervention for Anxious Youth (LIST); http://clinicalrials.gov/ ; NCT02279251, Date: 11.31. 2014.

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Background: Sexual- and gendered harassment are normalised in many peer groups, yet their associations with mental health concerns among adolescents are well-established. School based interventions that prevent and reduce sexual and gendered harassment among younger adolescents are scarce. For schools, protecting pupils from harassment may be challenging if the behaviour is trivialised among the pupils themselves. In the current study, the school intervention "Stop Sexual Harassment" was therefore developed to help teachers and pupils detect, address and stop sexual and gendered harassment among pupils ages 13-15 in Norwegian secondary schools. Methods: In this study the effectiveness of "Stop Sexual Harassment" is evaluated via a cluster randomised controlled trial among pupils and teachers at 38 secondary schools. Schools were randomised into intervention and control groups. Primary outcomes are sexual and gendered harassment victimisation and perpetration, which will be assessed by the administration of questionnaires to pupils and teachers at baseline, and 2-, and 7-months follow-up. A process evaluation of the intervention implementation will be conducted through focus group interviews with pupils and teachers to gain insight about their experiences with the program components and implementation of the intervention. Discussion: If the intervention yields positive effects, large-scale implementation of the program may be offered for secondary schools. The program may thus reduce sexual and gendered harassment among young adolescents. Clinical trial registration: clinicaltrial.gov; identifier: NCT04716400.

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Among youth in foster care (N = 303, aged 11-17 years), we investigated prevalence of internalizing symptoms; associations between symptom level and maltreatment types and numbers; and the interaction between gender and maltreatment, on internalizing symptoms. Youth completed Spence Children Anxiety Scale, Short Mood Feelings Questionnaire, and Child and Adolescent Trauma Screen. Compared to community samples, symptom levels above clinical cut-off was more frequent, with social- and generalized anxiety (ES = 0.78-0.88) being most prevalent among youth in foster care. Girls reported more internalizing symptoms (ES = 0.59-0.93). Sexual abuse and neglect were associated with a broader range of internalizing symptoms (ES = 0.35-0.64). Increased incidence of maltreatment was associated with increased levels of symptoms (ES = 0.21-0.22). Associations between maltreatment and symptom level were stronger for girls. This study stresses the importance of broad screening of maltreatment and internalizing symptoms to meet the needs of youth in foster care.

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Background: A high prevalence of anxiety and depression is found among youth in foster care. There is limited knowledge on the anxiety and depression symptom profiles of youth in foster care. We examined latent profiles of anxiety and depression symptoms across three unique youth samples and whether youth in foster care were more or less likely to belong to specific symptom profiles than their peers recruited from clinical or general youth populations. We also investigated if these profiles were predicted by sex and age. Methods: Self-reported anxiety and depression symptoms were assessed by Spence Children's Anxiety Scale and Short Mood and Feelings Questionnaire. Data were pooled from three youth samples (N = 2,005; mean age = 13.9 years, range = 11-18 years) comprising youth in foster care (n = 245), a clinical youth sample (n = 107), and a general population youth sample (n = 1,653). Symptom profiles were identified using latent profile analyses. Multinominal logistic regression was used to predict the latent profile membership. Results: Three profiles that differed both in symptom level and shape were identified and labeled as low, medium, and high symptom profile. Compared to the general population youth sample, youth in foster care had a higher likelihood of belonging to the high symptom profile, but not the medium symptom profile. Youth from the clinical sample had an increased risk of belonging to the medium and high symptom profiles compared to the youth in foster care and general population youth samples. Across samples, girls yielded a higher likelihood of having a medium or high symptom profile. Increasing age was associated with a higher likelihood of being in the high symptom profile. Conclusion: Compared to their counterparts in the general population, youth in foster care are at risk of belonging to a class of youth with high symptom levels across subtypes of internalizing symptoms, indicating the importance of systematic and broad assessment of internalizing symptoms among these youth. Knowledge on the symptom profiles of anxiety subtypes and depression increases our understanding of the treatment needs of youth in foster care.

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BACKGROUND: The 'FRIENDS for life' program (FRIENDS) is a 10-session cognitive behavioral therapy (CBT) program used for prevention and treatment of youth anxiety. There is discussion about whether FRIENDS is best applied as prevention or as treatment. METHODS: We compared FRIENDS delivered in schools as targeted prevention to a previous specialist mental health clinic trial. The targeted prevention sample (N = 82; Mage  = 11.6 years, SD = 2.1; 75.0% girls) was identified and recruited by school nurses in collaboration with a community psychologist. The clinical sample (N = 88, Mage  = 11.7 years, SD = 2.1; 54.5% girls) was recruited for a randomized controlled trial from community child- and adolescent psychiatric outpatient clinics and was diagnosed with anxiety disorders. RESULTS: Both samples showed significantly reduced anxiety symptoms from baseline to postintervention, with medium mean effect sizes across raters (youths and parents) and timepoints (post; 12-months follow-up). Baseline youth-reported anxiety symptom levels were similar between the samples, whereas parent-reported youth anxiety was higher in the clinical sample. CONCLUSIONS: The study suggests that self-reported anxiety levels may not differ between youth recruited in schools and in clinic settings. The results indicate promising results of the FRIENDS program when delivered in schools by less specialized health personnel from the school health services, as well as when delivered in clinics by trained mental health professionals.

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OBJECTIVE: We examined the effectiveness of targeted school-based cognitive-behavioral therapy (CBT) for adolescents (12-16 years of age) with anxiety, and tested whether brief CBT was noninferior to standard duration CBT. METHOD: A randomized controlled study of 313 adolescents (mean 14.0 years, SD = 0.84, 84% girls) were recruited through school health services to 10 weeks CBT group interventions. Groups of 5 to 8 adolescents were randomly allocated to brief (5 sessions, comprising 5.5 hours) or standard CBT (10 sessions, comprising 15 hours), or 10 weeks waitlist (WL). Self-reported and parent-reported youth anxiety symptoms, impairment from anxiety, depressive symptoms,and clinical severity were assessed pre- and postintervention, after WL, and at 1-year follow-up. RESULTS: Targeted school based CBT significantly reduced adolescents' anxiety symptoms with small to moderate effect sizes compared to WL (Cohen d = 0.34 for youth report and d = 0.53 for parent report). According to the parents, also adolescents' impairment from anxiety was significantly reduced compared to WL (d = 0.51). Pre to post changes in anxiety symptoms were small to moderate (within-group effect sizes between d = 0.41 and d = 0.67). Although no significant differences in effects were found between brief and standard CBT, brief CBT was not noninferior to standard CBT. Outcomes from both interventions were sustained at 1-year follow-up. CONCLUSION: Targeted school-based CBT interventions reduced anxiety, impairment, and depressive symptoms in adolescents. Both brief and standard CBT demonstrated efficacy, but brief CBT was not noninferior to standard CBT. By administering school-based CBT to youths with anxiety symptoms, we may reach young people with effective interventions at an earlier phase in their lives. CLINICAL TRIAL REGISTRATION INFORMATION: School Based Low-intensity Cognitive Behavioral Intervention for Anxious Youth (LIST); http://clinicalrials.gov/; NCT02279251.

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OBJECTIVE: This study evaluated the long-term outcomes of a stepped care treatment for pediatric obsessive-compulsive disorder (OCD) and investigated whether response to first-step cognitive-behavioral therapy (CBT) is an important indicator of 3-year outcomes. METHOD: This study is a part of the Nordic Long-term OCD Treatment Study (NordLOTS), in which 269 children and adolescents were treated with CBT. Nonresponders to CBT were randomized to extended treatment with continued CBT or pharmacotherapy with sertraline. Children's Yale-Brown Obsessive-Compulsive Scale (CY-BOCS) scores no higher than 15 and no higher than 10 were defined as treatment response and remission, respectively. Participants were assessed 2 and 3 years after first-step CBT. Linear mixed-effects models were used to analyze the outcomes. RESULTS: Intent-to-treat analyses showed a significant decrease in CY-BOCS total score from baseline (24.6) to 3-year follow-up (5.0; p = .001), with a mean decrease of 5.9 from after treatment to 3-year follow-up. Three years after treatment, 90% (n = 242) of participants were rated as responders and 73% were in clinical remission. The duration of treatment did not influence the symptom level at 3-year follow-up (p = .998) and no significant difference was found (p = .169) between the extended treatment conditions. CONCLUSION: The results suggest that evidence-based treatment for pediatric OCD has long-term positive effects, whether a first step of manual-based CBT or extended treatment with CBT or sertraline. The improvements were maintained, and the symptoms decreased further during follow-up and were, after 3 years, similarly independent of treatment duration and form of extended treatment. CLINICAL TRIAL REGISTRATION INFORMATION: Nordic Long-term Obsessive-Compulsive Disorder (OCD) Treatment Study; www.controlled-trials.com; ISRCTN66385119.

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BACKGROUND: Mothers' and fathers' internalizing symptoms may influence children's anxiety symptoms differently. OBJECTIVE: To explore the relationship between parental internalizing symptoms and children's anxiety symptoms in a clinical sample of children with anxiety disorders. METHOD: The sample was recruited through community mental health clinics for a randomized controlled anxiety treatment trial. At pre-intervention, children (n = 182), mothers (n = 165), and fathers (n = 72) reported children's anxiety symptoms. Mothers and fathers also reported their own internalizing symptoms. The children were aged 8 to 15 years (M age = 11.5 years, SD = 2.1, 52.2% girls) and all had a diagnosis of separation anxiety, social phobia, and/or generalized anxiety disorder. We examined parental internalizing symptoms as predictors of child anxiety symptoms in multiple regression models. RESULTS: Both mother and father rated internalizing symptoms predicted children's self-rated anxiety levels (adj. R 2 = 22.0%). Mother-rated internalizing symptoms predicted mother-rated anxiety symptoms in children (adj. R 2 = 7.0%). Father-rated internalizing symptoms did not predict father-rated anxiety in children. CONCLUSIONS: Clinicians should incorporate parental level of internalizing symptoms in their case conceptualizations.

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OBJECTIVE: The aim of the present study was to examine prevalence, characteristics and health outcomes among young adults (18 to 25 years) who provide informal care to family members or others with physical or mental illnesses, substance misuse or disabilities. DESIGN: The sample was obtained from a national survey in Norway from 2018 among students in higher education (the SHoT2018-study). The current sample comprise 40,205 participants, 70.2% women, mean age 22 years (SD = 1.7). OUTCOME MEASURES: Participants answered questions on care responsibilities, mental health problems (The Hopkins Symptoms Checklist-25), insomnia (sleep questionnaire), somatic health (Somatic Symptom Scale-8), and life satisfaction (Satisfaction With Life Scale). RESULTS: 5.5% of the respondents reported having care responsibilities. Caring was associated with being female, single, having divorced parents, being an immigrant, and having financial difficulties. More mental health problems, insomnia, somatic symptoms, and lower life satisfaction were found among respondents with care responsibilities. Number of hours of caring was associated with negative health outcomes in a dose-response pattern. CONCLUSION: Professionals within health care, social services and the educational system should be sensitized to the needs of young adults with care responsibilities for family members or others with illness, substance misuse, or disabilities. The negative health problems among these young adult carers (YACs) should be acknowledged, and adequate support made available.

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OBJECTIVE: The aim was to investigate whether clinical experience, formal cognitive behavioural therapy (CBT) training, adherence, and competence predict outcome in CBT for anxiety disorders in youth. METHOD: Videotapes (N = 181) from the sessions in a randomized controlled effectiveness trial (Wergeland et al., 2014, Behaviour Research and Therapy, 57, 1-12) comprising youth (N = 182, M age = 11.5 years) with mixed anxiety disorders were assessed for treatment adherence and competence using the Competence and Adherence Scale for CBT for anxiety disorders in youth (Bjaastad et al., 2016, Psychological Assessment, 28, 908-916). Therapists' (N = 17) clinical experience and educational background were assessed. Participants completed a diagnostic interview (Anxiety Disorders Interview Schedule, child and parent versions) and an anxiety symptom measure (Spence Children's Anxiety Scale, child and parent versions) at pretreatment, posttreatment, and 1-year follow-up. RESULTS: Higher therapist adherence was related to better treatment outcomes, whereas number of years of clinical experience and competence was related to worse outcomes. However, these findings were not consistent across informants and the time points for the assessments. Interaction effects suggested that competence among therapists with formal CBT training was related to better patient outcomes. CONCLUSIONS: Therapist adherence, competence, and clinical experience are associated with outcomes of manualized CBT for youth anxiety disorders, but mixed findings indicate the need for more research in this area.

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This study reports follow-up 2 and 3 years after the initial assessment of a sample of youth with a primary diagnosis of OCD. Participants were 109 children and adolescents, aged 5-17 years, recruited from a specialized, outpatient OCD clinic in Sweden. Patients were treated with cognitive behavioral therapy (CBT), augmented when indicated by selective serotonin reuptake inhibitor (SSRI). In cases where SSRIs were insufficient, augmentation with a second-generation antipsychotic (SGA) was applied. Participants were assessed with the Children's Yale-Brown Obsessive-Compulsive Scale (CY-BOCS), Children's OCD Impact Scale (COIS), and Children's Depressive Inventory (CDI) at follow-ups 2 and 3 years after baseline assessment. Treatment response was defined as CY-BOCS total score ≤ 15, and remission was defined as CY-BOCS total score ≤ 10. Analyzing the outcomes with linear mixed-effects models (LME) showed a decrease in OCD symptom load from 23 to 6.9 at the 3-year follow-up. Moreover, two of three (66.1%) participants were in remission, and another 19.2% had responded to treatment at the 3-year follow-up. Thus, 85.3% of participants responded to treatment. Moreover, during the follow-up period, participants' psychosocial functioning had significantly improved, and depressive symptoms had significantly decreased. The results suggest that evidence-based treatment for pediatric OCD, following expert consensus guidelines, has long-term positive effects for most children and adolescents diagnosed with OCD. The results also indicate that improvements are maintained over a 3-year period, at least, and that improvement is also found with regard to psychosocial functioning and depressive symptoms.

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AIMS: Dual treatment of parents with substance-use disorders (SUD) is an approach which aims to meet the needs of both SUD patients and their children. Whereas the parents need to learn to live without substances, the children need a predictable and structured environment with parents who are sensitive and psychologically available. In this study we explore the possibilities and challenges of this joint approach from the perspectives of professionals employed in an in-patient facility for families with parental SUD. METHODS: A qualitative design was used comprising three focus-group interviews with 15 professionals: two groups with ward staff and one with therapists, all working at a family ward for parents with SUD and their children. Data were analysed using thematic analysis. RESULTS: Professionals faced difficulties combining the needs of parents and children and seemed to choose to prioritise either the adult with SUD or the wellbeing of the child. However, some professionals described what might be a third and alternative solution by supporting the mothers in everyday life, routines, and care, through exploring present moment situations. This approach seemed to help parents become more conscious of the child, their interaction with the child, and their own feelings. Professionals described working at the family ward as emotionally challenging. CONCLUSION: Combining treatment of parental SUD, interventions to improve parenting roles and practice, and at the same time focusing on the developmental needs of children, is experienced as a complex and demanding task. Different priorities and treatment aims may enhance tensions between professionals. Even though professionals experience in-patient dual treatment as challenging, they believe this approach facilitates positive development in substance dependent parents and their children.

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PURPOSE: To examine associations between health-related quality of life (HRQoL) and anxiety symptoms across anxiety domains (obsessions/compulsions, social anxiety, panic disorder, agoraphobia, separation anxiety, physical injury fears, generalised anxiety, and posttraumatic stress) in a general adolescent population. Expanded knowledge about these associations can provide valuable information for improving interventions and prevention strategies for adolescent anxiety. METHODS: Cross-sectional data about anxiety were collected via a school survey from a community sample of Norwegian adolescents aged 12-17 (N = 1719). Based on scores from the Spence Children's Anxiety Scale (SCAS), each adolescent was categorized as reporting a low, medium, or high level of anxiety. Each adolescent's HRQoL was then measured using the Questionnaire for Measuring Health-Related Quality of Life in Children and Adolescents Revised Version (KINDL-R). Hierarchical regression analyses were performed to determine any relationship between anxiety symptoms and HRQoL. RESULTS: Across domains of anxiety, anxiety symptoms were inversely associated with overall HRQoL. All HRQoL-dimensions were inversely associated with overall level of anxiety symptoms. In adolescents with medium and high anxiety symptoms, poor HRQoL was documented in all HRQoL dimensions with the exception of the family dimension. CONCLUSIONS: The strong association between elevated levels of anxiety symptoms and poor HRQoL demonstrate the importance of improved mental health interventions and prevention initiatives targeting anxious adolescents.

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PURPOSE: To examine the prevalence and correlates of anxiety in a community sample of adolescents. Knowing the prevalence and characteristics of anxious adolescents is valuable to improve anxiety prevention strategies and interventions. DESIGN: Cross-sectional data about anxiety were collected via a school survey from a community sample of Norwegian adolescents aged 12-17 (N = 1719). METHODS: Based on scores from the Spence Children's Anxiety Scale, the adolescents were categorized as not anxious or anxious. Logistic regression analysis was performed to access the impact of each factor on the likelihood that participants would report an elevated level of anxiety. RESULTS: A total of 22% of the adolescents were categorized as anxious. Female gender, experienced negative life events, low social support, and low self-efficacy were associated with elevated level of anxiety. CONCLUSIONS: The high prevalence of anxiety in adolescents demonstrates the importance of improved prevention interventions targeting anxious adolescents. We argue that addressing is the responsibility of not only the individual adolescents and their families but also schools, school health services, and policy makers. School-based interventions that increase social support and self-efficacy would probably be particularly beneficial for anxious adolescents.

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BACKGROUND: Anxiety disorders are prevalent among adolescents and may have long-lasting negative consequences for the individual, the family and society. Cognitive behavioral therapy (CBT) is an effective treatment. However, many anxious youth do not seek treatment. Low-intensity CBT in schools may improve access to evidence-based services. We aim to investigate the efficacy of two CBT youth anxiety programs with different intensities (i.e., number and length of sessions), both group-based and administered as early interventions in a school setting. The objectives of the study are to examine the effects of school-based interventions for youth anxiety and to determine whether a less intensive intervention is non-inferior to a more intensive intervention. METHODS/DESIGN: The present study is a randomized controlled trial comparing two CBT interventions to a waitlist control group. A total of 18 schools participate and we aim to recruit 323 adolescents (12-16 years). Youth who score above a cutoff on an anxiety symptom scale will be included in the study. School nurses recruit participants and deliver the interventions, with mental health workers as co-therapists and/or supervisors. Primary outcomes are level of anxiety symptoms and anxiety-related functional impairments. Secondary outcomes are level of depressive symptoms, quality of life and general psychosocial functioning. Non-inferiority between the two active interventions will be declared if a difference of 1.4 or less is found on the anxiety symptom measure post-intervention and a difference of 0.8 on the interference scale. Effects will be analyzed by mixed effect models, applying an intention to treat procedure. DISCUSSION: The present study extends previous research by comparing two programs with different intensity. A brief intervention, if effective, could more easily be subject to large-scale implementation in school health services. TRIAL REGISTRATION: ClinicalTrials.gov, NCT02279251 . Registered on 15 October 2014. Retrospectively registered.

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