Clara Hellner

ORCID: 0000-0002-8375-9447
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About
Contact & Profiles
Research Areas
  • Suicide and Self-Harm Studies
  • Child and Adolescent Psychosocial and Emotional Development
  • Attention Deficit Hyperactivity Disorder
  • Autism Spectrum Disorder Research
  • Bipolar Disorder and Treatment
  • Schizophrenia research and treatment
  • Personality Disorders and Psychopathology
  • Treatment of Major Depression
  • Gambling Behavior and Treatments
  • Digital Mental Health Interventions
  • Maternal Mental Health During Pregnancy and Postpartum
  • Infective Endocarditis Diagnosis and Management
  • Mental Health Research Topics
  • Early Childhood Education and Development
  • Psychosomatic Disorders and Their Treatments
  • Family and Disability Support Research
  • Psychopathy, Forensic Psychiatry, Sexual Offending
  • Sleep and related disorders
  • Antimicrobial Resistance in Staphylococcus
  • Resilience and Mental Health
  • Healthcare Decision-Making and Restraints
  • Obsessive-Compulsive Spectrum Disorders
  • Cardiac Valve Diseases and Treatments
  • Behavioral and Psychological Studies
  • Tryptophan and brain disorders

Karolinska Institutet
2017-2025

Stockholm Health Care Services
2017-2025

Karolinska University Hospital
2024-2025

Stockholm County Council
2017-2023

Shaheed Rajaei Cardiovascular Medical and Research Center
2022

University of Liège
2019-2022

Association Française pour le Dépistage et la Prévention des Handicaps de l’Enfant
2022

Maria Cecilia Hospital
2022

University of Gothenburg
2021

Göteborgs Stads
2020

The totality of the societal and individual impact treatment-resistant depression (TRD) is unknown, as potential to prognosticate TRD. generalizability many observational studies on TRD limited.To estimate burden in a large population-wide cohort an area with universal health care by including data from both types (psychiatric nonpsychiatric) and, further, develop prognostic model for clinical use.This study, population-based assessed Stockholm MDD Cohort episodes major depressive disorder...

10.1001/jamapsychiatry.2022.3860 article EN cc-by JAMA Psychiatry 2022-12-14

Importance Nonsuicidal self-injury is prevalent in adolescence and associated with adverse clinical outcomes. Effective interventions that are brief, transportable, scalable lacking. Objective To test the hypotheses an internet-delivered emotion regulation individual therapy for adolescents delivered adjunctive to treatment as usual superior only reducing nonsuicidal improvements mediate these effects. Design, Setting, Participants This 3-site, single-masked, randomized superiority trial...

10.1001/jamanetworkopen.2023.22069 article EN cc-by-nc-nd JAMA Network Open 2023-07-13

Importance Major depressive disorder (MDD) is an important risk factor of suicidal behavior, but the added burden behavior and MDD on patient societal level, including all-cause mortality, not well studied. Also, contribution various prognostic factors for has been quantified in larger samples. Objective To describe clinical outcomes, patients with to explore associated management inform future research guidelines. Design, Setting, Participants This population-based cohort study used health...

10.1001/jamapsychiatry.2023.2833 article EN cc-by JAMA Psychiatry 2023-08-16

ABSTRACT Objective The study aimed to estimate 5‐year recurrence rates of first‐episode major depressive disorder (MDD) and assess the impact adolescence on likelihood after first episode, compared adults. Methods A pre‐registered retrospective cohort that utilized epidemiological data from Stockholm MDD Cohort (1997–2018), including all individuals registered with a depression diagnosis in Region 2010 2018. This dataset combines longitudinal information primary secondary care, socioeconomic...

10.1111/acps.13785 article EN cc-by-nc-nd Acta Psychiatrica Scandinavica 2025-01-05

Nonsuicidal self-injury (NSSI) is common among adolescents and associated with negative outcomes. However, treatments developed specifically for NSSI the proposed disorder (NSSID) are scarce, access to empirically supported in many areas limited. Online carry potential increase availability of evidence-based treatments. Emotion regulation individual therapy (ERITA) has shown promise treatment NSSID. The present study examined feasibility, acceptability, utility an online version ERITA....

10.1186/s12888-018-1885-6 article EN cc-by BMC Psychiatry 2018-10-11

<h3>Importance</h3> Individuals who self-harm may have an increased risk of aggression toward others, but this association has been insufficiently investigated. More conclusive evidence affect assessment, treatment interventions, and clinical guidelines. <h3>Objective</h3> To investigate the between nonfatal violent crime. <h3>Design, Setting, Participants</h3> This population-based longitudinal cohort study, conducted from January 1, 1997, through December 31, 2013, studied all Swedish...

10.1001/jamapsychiatry.2017.0338 article EN JAMA Psychiatry 2017-04-06

Nonsuicidal self-injury (NSSI) is a serious health risk behavior that forms the basis of tentative diagnosis in DSM-5, NSSI Disorder (NSSID). To date, established treatments specific to or NSSID are scarce. As first step evaluating feasibility, acceptability, and utility novel treatment for adolescents with NSSID, we conducted an open trial emotion regulation individual therapy (ERITA): 12-week, behavioral aimed at directly targeting both its proposed underlying mechanism difficulties....

10.1186/s12888-017-1527-4 article EN cc-by BMC Psychiatry 2017-12-01

Obsessive-compulsive disorder (OCD) is associated with increased mortality, but the causes of this increase are poorly understood. This study examined whether OCD an risk metabolic and cardiovascular complications.Individuals diagnosed (n = 25,415) were identified from a cohort 12,497,002 individuals living in Sweden between 1973 2013. Cox proportional hazard regression analyses used to investigate complications patients compared general population unaffected full siblings individuals....

10.1016/j.biopsych.2017.12.003 article EN cc-by-nc-nd Biological Psychiatry 2017-12-21

Family and twin studies of Borderline Personality Disorder (BPD) have found familial aggregation genetic propensity for BPD, but estimates vary widely. Large-scale family clinically diagnosed BPD are lacking. Therefore, we performed a total-population study estimating the heritability BPD. We followed 1,851,755 individuals born 1973-1993 in linked Swedish national registries. BPD-diagnosis was ascertained between 1997 2013, 11,665 received BPD-diagnosis. identified relatives estimated sex...

10.1038/s41380-019-0442-0 article EN cc-by Molecular Psychiatry 2019-06-03

Background Pharmacoepidemiological studies have long raised concerns on widespread use of benzodiazepines and benzodiazepine-related drugs (BZDs), in particular long-term use, among adults the elderly. In contrast, evidence pertaining to rates BZD at younger ages is still scarce, factors that influence utilisation shape different prescribing patterns youths remain largely unexplored. We examined prevalence rates, relative changes over time, for dispensation young people aged 0–24 years...

10.1371/journal.pmed.1002635 article EN cc-by PLoS Medicine 2018-08-07

Abstract O bjective Investigating unique and shared aspects of measures emotion regulation (ER) advances our understanding ER as a multidimensional construct. This study aimed to investigate psychometric properties three ER‐measures: Difficulties in Emotion Regulation Scale (DERS‐36), the abbreviated version DERS‐16, Questionnaire (ERQ). Methods In community sample ( N = 843; 56% females) we investigated their internal consistency, factor structure, convergence, association with symptoms...

10.1002/jclp.23206 article EN cc-by-nc-nd Journal of Clinical Psychology 2021-07-03

Abstract There is concern that selective serotonin reuptake inhibitor (SSRI) treatment may increase the risk of suicide attempts or deaths, particularly among children and adolescents. However, debate remains regarding nature relationship. Using nationwide Swedish registers, we identified all individuals aged 6–59 years with an incident SSRI dispensation ( N = 538,577) from 2006 to 2013. To account for selection into treatment, used a within-individual design compare deaths (suicidal...

10.1038/s41386-021-01179-z article EN cc-by Neuropsychopharmacology 2021-09-24

Objective: The authors examined associations between medications for alcohol and opioid use disorders (acamprosate, naltrexone, methadone, buprenorphine) suicidal behavior, accidental overdoses, crime. Method: In this total population cohort study, 21,281 individuals who received treatment with at least one of the four 2005 2013 were identified. Data on medication outcomes collected from Swedish population-based registers. A within-individual design (using stratified Cox proportional hazards...

10.1176/appi.ajp.2018.17101112 article EN American Journal of Psychiatry 2018-08-02

Previous research has noted trends of increasing internalizing problems (e.g., symptoms depression and anxiety), particularly amongst adolescent girls. Cross-cohort comparisons using identical assessments both anxiety in youth are lacking, however.In this large twin study, we examined samples 9 year old children 15 adolescents, gathered from successive birth cohorts 1998 to 2008 (age 9) 1994-2001 15). Assessments at age were parent-rated, self- parent-rated. We (i) the relation between...

10.1186/s40359-019-0326-8 article EN cc-by BMC Psychology 2019-08-02

Objective Emotion regulation group therapy (ERGT) has shown promising results in several efficacy trials. However, it not been evaluated outside a research setting. In order to increase the availability of empirically supported treatments for individuals with borderline personality disorder and deliberate self-harm, an evaluation ERGT routine clinical care was conducted therapists different professional backgrounds who had received brief intensive training prior trial onset. Design...

10.1136/bmjopen-2017-016220 article EN cc-by-nc BMJ Open 2017-10-01

This study examines trends in antidepressant drug dispensations among young people aged 0-24 years Sweden during the period 2006-2013, as well prescription patterns and central nervous system (CNS) polypharmacy with antidepressants. Using linkage of Swedish national registers, we identified all residents that collected at least one (here defined users) between 1 January 2006 31 December 2013 (n = 174,237), categorized them children (0-11 years), adolescents (12-17 adults (18-24 years)....

10.1007/s00787-018-01269-2 article EN cc-by European Child & Adolescent Psychiatry 2019-01-18

Missing diagnostic information often results poor accuracy of the clinical decision process. The Mini International Neuropsychiatric Interview for Children and Adolescents (MINI-KID) is a short standardized interview covers rather broad range diagnoses applicable to children adolescents. MINI-KID disorder classifications have shown test-retest reliability validity comparable other interviews claimed be useful tool screening in Child Adolescent Psychiatric care. concordance between Swedish...

10.1186/s12888-019-2121-8 article EN cc-by BMC Psychiatry 2019-05-09

Background More knowledge about risks of clinical outcomes associated with nonsuicidal self‐injury (NSSI) and suicide attempts (SAs) is needed to inform risk assessment intervention. Methods Longitudinal cohort study based on 1,855 youths was clinically assessed for NSSI SA, followed up (from December, 2011 December 2013) the outcomes; diagnosed self‐injury, alcohol/substance use disorder, psychiatric inpatient care data derived from Swedish registers. Hazard ratios (HRs) 95% confidence...

10.1111/jcpp.13544 article EN cc-by Journal of Child Psychology and Psychiatry 2021-12-02

Objective: Suicide attempts are common in youth and have potentially lethal outcomes. Effective treatments targeting suicide scarce. The objective was to assess the feasibility of a family-based cognitive-behavioral treatment relative an active control for with suicidal behavior. Method: Thirty youths (93% female; mean [SD] age=14.6 [1.5] years) residing Sweden recent behavior (last 3 months) at least one parent per were randomized 12 weeks Safe Alternatives Teens Youths (SAFETY) or...

10.31219/osf.io/64ftg preprint EN 2025-01-10

Individuals who engage in non-suicidal self-injury (NSSI) exhibit reduced pain sensitivity compared to the general population. It has been argued that this hypoalgesic characteristic may be attributable hyper-effective modulation; however, empirical support for theory remains inconsistent. The aim of study was use a combined offset analgesia (OA) and onset hyperalgesia (OH) protocol investigate if women with NSSI have propensity inhibit nociceptive signals higher degree (stronger OA...

10.1101/2025.02.07.637056 preprint EN cc-by bioRxiv (Cold Spring Harbor Laboratory) 2025-02-10

Objective: Suicide attempts are common in youth and have potentially lethal outcomes. Effective treatments targeting suicide scarce. The objective was to assess the feasibility of a family-based cognitive-behavioral treatment relative an active control for with suicidal behavior. Method: Thirty youths (93% female; mean [SD] age=14.6 [1.5] years) residing Sweden recent behavior (last 3 months) at least one parent per were randomized 12 weeks Safe Alternatives Teens Youths (SAFETY) or...

10.31219/osf.io/64ftg_v1 preprint EN 2025-01-10

Little is known about sex differences in outcomes of self-harm, and there are inconclusive results concerning the association between sex, suicide attempts. The aim this study was to explore self-harm adolescence. In cohort study, all individuals (0-17 years) enrolled at child- adolescent mental health services (CAMHS) Stockholm 2001 2015 (N = 110,072) were followed national registers from their last contact with CAMHS, until end 2015. Exposure as reason for contact, outcome measures were:...

10.1007/s00787-020-01490-y article EN cc-by European Child & Adolescent Psychiatry 2020-02-13

Abstract A systematic review and meta-analysis was conducted where we evaluated the effects of Parent Management Training (PMT), Parent–Child Interaction Therapy (PCIT) PMT combined with child cognitive behavioral therapy (CBT) using data from 25 RCTs on children clinical levels disruptive behavior (age range 2–13 years). Results showed that ( g = 0.64 [95% CI 0.42, 0.86]) PCIT 1.22 0.75, 1.69]) were more effective than waiting-list (WL) in reducing parent-rated behavior, also improving...

10.1007/s10578-022-01367-y article EN cc-by Child Psychiatry & Human Development 2022-07-05
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