Profile Details

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Hire Dr. Thomas B.

Norway

USD 200 /hr

Statistical expert interested in research and academic publication in clinical sciences and social sciences.

Profile Summary

Researcher at the hospital of southern Norway since 2018. Employed as a statistician at the hospital of southern norway since 2020. My work is in designing and conducting analyses for projects in clinical medical settings (interventions, medical equipment etc.). I am passionate about publication of results and speeding up the interaction between scientists by reducing time spent on analyses and writing.

Subject Matter Expertise

• ★ Statistics
• ★ Technical & Scientific Writing
• ★ Manuscript & Journal Article Writing
• ☆ STATA
• ☆ R
• ☆ Medical Sciences
• ☆ Journal Selection
• ☆ Experimental Protocols
• ☆ Textbook Content Writing
• ☆ Science Communication

Services

• Writing
• Research
• Consulting
• Data & AI

Writing Medical Writing, Non-Medical Regulatory Writing, Technical Writing, General Proofreading & Editing

Research Feasibility Study, Gap Analysis, Gray Literature Search, Scientific and Technical Research, Systematic Literature Review

Consulting Scientific and Technical Consulting

Data & AI Predictive Modeling, Statistical Analysis, Data Visualization, Data Cleaning, Data Processing, Data Insights

Work Experience

Senior research fellow/senior lecturer

Hospital of Southern Norway

January 2018 - Present

Education

Ph.D (Department of Clinical Psychology)

University of Bergen

January 2018 - January 2023

M.S., Psychology

Aalborg University

January 2014 - January 2016

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

Thomas B. Bertelsen, Åshild Tellefsen Håland (2025). A replication study to evaluate parental internalizing symptoms as predictors of anxiety symptoms . Cogent Psychology.

Ingrid Osland, Åshild Tellefsen Haaland, Joe Himle, Thomas Bjerregaard Bertelsen (2025). School nurse–delivered anxiety interventions for adolescents: a systematic review and meta-analysis . Cogent Psychology.

Åshild Tellefsen Håland, Thomas B. Bertelsen (2025). Correction to: School Anxiety Accommodation in Youth: Prevalence and Patterns Among Teachers . Child Psychiatry & Human Development.

Åshild Tellefsen Håland, Thomas B. Bertelsen (2025). School Anxiety Accommodation in Youth: Prevalence and Patterns Among Teachers . Child Psychiatry & Human Development.

Thomas B. Bertelsen, Bente Storm Mowatt Haugland, Gro Janne Wergeland, Åshild Tellefsen Håland (2024). Parental Early Life Maltreatment and Related Experiences in Treatment of Youth Anxiety Disorder . Child Psychiatry & Human Development.

Rune Zahl-Olsen, Frode Thuen, Thomas Bjerregaard Bertelsen (2024). The effectiveness of the in‐person and online Gottman Seven Principles Couple Enhancement Program: A propensity score matching design . Journal of Marital and Family Therapy.

Tonje Holte Stea, Thomas Bjerregaard Bertelsen, Liv Fegran, Ellen Sejersted, Annette Løvheim Kleppang, Tonje Fyhn (2024). Interventions targeting young people not in employment, education or training (NEET) for increased likelihood of return to school or employment—A systematic review . PLOS ONE.

Rune Zahl‐Olsen, Linda Severinsen, Ben Shahar, Jan Reidar Stiegler, Thomas Bjerregaard Bertelsen (2023). Emotion‐focused skills training for parents with anxious children. A pilot study . Journal of Marital and Family Therapy.

Thomas B. Bertelsen, Joeseph A. Himle, Åshild Tellefsen Håland (2023). Bidirectional Relationship Between Family Accommodation and Youth Anxiety During Cognitive-Behavioral Treatment . Child Psychiatry & Human Development.

Erling W. Rognli, Rune Zahl‐Olsen, Sondre Sverd Rekdal, Asle Hoffart, Thomas Bjerregaard Bertelsen (2023). Editorial perspective: Bayesian statistical methods are useful for researchers in child and adolescent mental health . Journal of Child Psychology and Psychiatry.

Silje St{\o}le Brokke and Thomas Bjerregaard Bertelsen and Nils Inge Landr{\o} and Vegard {\O}ksendal Haaland(2022). The effect of sexual abuse and dissociation on suicide attempt . BMC Psychiatry. 22. (1). Springer Science and Business Media {LLC}

Bertelsen TB, Hoffart A, Rekdal SS and Zahl-Olsen R. Bayes factor benefits for clinical psychology: review of child and adolescent evidence base [version 2; peer review: 2 approved] F1000Research 2022, 11:171 (https://doi.org/10.12688/f1000research.76842.2) .

Bayes factor benefits for clinical psychology: review of child and adolescent evidence base <head> <META HTTP-EQUIV="Refresh" CONTENT="0;URL=/servlet/useragent"> </head> . F1000Research.

Thomas B. Bertelsen, Gro Janne Wergeland, Tine Nordgreen, Joseph A. Himle, &#197;shild Tellefsen H&#229;land (2022). Benchmarked effectiveness of family and school involvement in group exposure therapy for adolescent anxiety disorder . Psychiatry Research.

Thomas Bjerregaard Bertelsen(2022). Efficacy of Emotion-Focused Parenting Programs for Children’s Internalizing and Externalizing Symptoms: A Randomized Clinical Study . Journal of Clinical Child &amp; Adolescent Psychology. p. 1--17. Informa {UK} Limited

Bayes factor benefits for clinical psychology: review of child and adolescent evidence base <head> <META HTTP-EQUIV="Refresh" CONTENT="0;URL=/servlet/useragent"> </head> . F1000Research.

Sunde, T., Johnson, S.U., Himle, J.A. et al. Metacognitions and Obsessive Beliefs in Obsessive–Compulsive Disorder: A Study of Within- and Between-Person Effects on Long-Term Outcome. Cogn Ther Res (2021). https://doi.org/10.1007/s10608-021-10210-y .

Frode Lysberg and Tomas Bjerregaard Bertelsen and Cathrine Lysberg and Magnhild H{\o}ie and Geir Arild Espnes and Siw Tone Innstrand(2020). Change and stability: Within-person life satisfaction over a 20-year period using data from the HUNT survey . Scandinavian Journal of Public Health. p. 140349482095743. {SAGE} Publications

Rune Zahl-Olsen and Nicolay Gausel and Agnes Zahl-Olsen and Thomas Bjerregaard Bertelsen and Aashild Tellefsen Haaland and Terje Tilden(2019). Physical Couple and Family Violence Among Clients Seeking Therapy: Identifiers and Predictors . Frontiers in Psychology. 10. Frontiers Media {SA}

PREPRINT

Marie Aaslie Reir&#229;skag, Silje St&#248;le Brokke, Gudrun Rohde, Thomas Bjerregaard Bertelsen, Nils Inge Landr&#248;, Vegard &#216;ksendal Haaland (2024). Decision-making in suicidal acute psychiatric patients .