Publications by authors named "Kristen Hagen"

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Concentrated ERP for Patients With Difficult-to-Treat OCD: Insight as a Predictor of Acute and Long-Term Outcomes.
Kristian Tjelle, Bjarne Hansen, Stian Solem, Michael G Wheaton, Gerd Kvale, Kristen Hagen

Depress Anxiety· December 2025

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Development and validation of a machine learning model to predict cognitive behavioral therapy outcome in obsessive-compulsive disorder using clinical and neuroimaging data.
Laurens A van de Mortel, Willem B Bruin, Pino Alonso, Sara Bertolín, Jamie D Feusner, Kristen Hagen

J Affect Disord· November 2025

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Motivation in the Bergen 4-day treatment for obsessive-compulsive disorder.
Håvard Berg, Kristian Tjelle, Stian Solem, Bjarne Hansen, Gerd Kvale, Kristen Hagen

BMC Psychiatry· October 2025

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Optimizing genetic ancestry adjustment in DNA methylation studies: a comparative analysis of approaches.
Kira D Höffler, Seyma Katrinli, Matthew W Halvorsen, Anne-Kristin Stavrum, Kevin S O'Connell, Kristen Hagen

Epigenetics Chromatin· October 2025

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Preliminary effectiveness of the Bergen 4-day treatment for OCD in Iceland.
Sóley Dröfn Davidsdottir, Ólafía Sigurjonsdottir, Sigurbjörg Jóna Ludvigsdottir, Gerd Kvale, Bjarne Hansen, Kristen Hagen

Cogn Behav Ther· September 2025

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Executive control in Obsessive-Compulsive Disorder: A worldwide mega-analysis of task-based functional neuroimaging data of the ENIGMA-OCD consortium.
Nadža Džinalija, Ilya M Veer, H Blair Simpson, Iliyan Ivanov, Srinivas Balachander, Kristen Hagen

bioRxiv· August 2025

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Association Between Polygenic Risk and Symptom Severity Change After Cognitive Behavioral Therapy for Obsessive-Compulsive Disorder.
Julia Bäckman, John Wallert, Matthew Halvorsen, Bjorn Roelstraete, Elles de Schipper, Kristen Hagen

Am J Med Genet B Neuropsychiatr Genet· July 2025

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The Bergen 4-day treatment for specific phobia of vomiting: a case series.
Sóley Dröfn Davidsdottir, Kristján Helgi Hjartarson, Sigurbjörg Jóna Ludvigsdottir, Ásmundur Gunnarsson, Sigurdur Vidar, Kristen Hagen

Behav Cogn Psychother· June 2025

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Exploring the Black Box: What Happens during Brief Concentrated Exposure and Response Prevention for Obsessive-Compulsive Disorder?
Franziska Miegel, Jakob Scheunemann, Saskia Pampuch, Josephine Schultz, Bjarne Hansen, Kristen Hagen

Psychother Psychosom· June 2025

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Genome-wide analyses identify 30 loci associated with obsessive-compulsive disorder.
Nora I Strom, Zachary F Gerring, Marco Galimberti, Dongmei Yu, Matthew W Halvorsen, Kristen Hagen

Nat Genet· June 2025

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Optimizing Genetic Ancestry Adjustment in DNA Methylation Studies: A Comparative Analysis of Approaches.
Kira D Höffler, Seyma Katrinli, Matthew W Halvorsen, Anne-Kristin Stavrum, Kevin S O'Connell, Kristen Hagen

Res Sq· May 2025

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Genome-wide analyses identify 30 loci associated with obsessive-compulsive disorder.
Nora I Strom, Zachary F Gerring, Marco Galimberti, Dongmei Yu, Matthew W Halvorsen, Kristen Hagen

medRxiv· April 2025

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A burden of rare copy number variants in obsessive-compulsive disorder.
Matthew W Halvorsen, Elles de Schipper, Julia Bäckman, Nora I Strom, Kristen Hagen

Mol Psychiatry· April 2025

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Treatment expectancy and credibility as predictors of concentrated exposure treatment outcomes in patients with difficult-to-treat obsessive-compulsive disorder.
Håvard Berg, Kristian Tjelle, Bjarne Hansen, Stian Solem, Thröstur Björgvinsson, Kristen Hagen

BMC Psychiatry· March 2025

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The bergen 4-day treatment for panic disorder: a longer-term follow-up.
Thorstein Olsen Eide, Bjarne Hansen, Kay Morten Hjelle, Stian Solem, Michael G Wheaton, Kristen Hagen

BMC Psychiatry· February 2025

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Development and validation of a machine learning model to predict cognitive behavioral therapy outcome in obsessive-compulsive disorder using clinical and neuroimaging data.
Laurens A van de Mortel, Willem B Bruin, Pino Alonso, Sara Bertolín, Jamie D Feusner, Kristen Hagen

medRxiv· February 2025

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The Bergen 4-Day Treatment for panic disorder patients in a rural clinical setting: a long-term follow-up study.
Thorstein Olsen Eide, Thorbjørn Olsen, Hans Hansen, Bjarne Hansen, Stian Solem, Kristen Hagen

BMC Psychiatry· January 2025

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Insomnia as a predictor of treatment outcomes in adolescents receiving concentrated exposure treatment for OCD.
Solvei Harila Skjold, Kristen Hagen, Michael G Wheaton, Håvard Kallestad, Kay Morten Hjelle

BMC Psychiatry· October 2024

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Interdisciplinary CBT treatment for patients with odontophobia and dental anxiety related to psychological trauma experiences: a case series.
Yngvill Ane Stokke Westad, Gina Løge Flemmen, Stian Solem, Trine Monsen, Henriette Hollingen, Kristen Hagen

BMC Psychiatry· September 2024

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White matter diffusion estimates in obsessive-compulsive disorder across 1653 individuals: machine learning findings from the ENIGMA OCD Working Group.
Bo-Gyeom Kim, Gakyung Kim, Yoshinari Abe, Pino Alonso, Stephanie Ameis, Kristen Hagen

Mol Psychiatry· April 2024

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Correction: White matter diffusion estimates in obsessive-compulsive disorder across 1653 individuals: machine learning findings from the ENIGMA OCD Working Group.
Bo-Gyeom Kim, Gakyung Kim, Yoshinari Abe, Pino Alonso, Stephanie Ameis, Kristen Hagen

Mol Psychiatry· April 2024

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Patient adherence as a predictor of acute and long-term outcomes in concentrated exposure treatment for difficult-to-treat obsessive-compulsive disorder.
Kristian Tjelle, Håvard Berg Opstad, Stian Solem, Gerd Kvale, Michael G Wheaton, Kristen Hagen

BMC Psychiatry· April 2024

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Genome-wide association study identifies new loci associated with OCD.
Nora I Strom, Matthew W Halvorsen, Chao Tian, Christian Rück, Gerd Kvale, Kristen Hagen

medRxiv· March 2024

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The Bergen 4-day treatment for social anxiety disorder: a pilot study.
Bjarne Hansen, Thorstein Olsen Eide, Marie Aaslie Reiråskag, Kristian August Tjelle, Stian Solem, Kristen Hagen

BMC Psychiatry· February 2024

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The effectiveness and acceptability of the Bergen 4-day treatment for adolescents with OCD: a replication and extension.
Solvei Harila Skjold, Kristen Hagen, Michael G Wheaton, Kay Morten Hjelle, Thröstur Björgvinsson

BMC Psychiatry· February 2024

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