Profile Details

Create Project

★★★★★

☆☆☆☆☆

USD 100 /hr

★★★★★

☆☆☆☆☆

Hire Dr. Ashkan B.

Germany

USD 100 /hr

Meta-Analysis Expert | PhD Clinical Neuroscience | Creator of Meta-MAR (5,000+ users) | R & Python

Profile Summary

I am a meta-analysis methodologist with a PhD in Clinical Neuroscience and an M.Sc. in Data Science. I specialize in quantitative evidence synthesis for clinical, psychological, and health research. I am the creator of Meta-MAR (meta-mar.com), an AI-powered meta-analysis platform used by 5,000+ researchers in 120+ countries, with Stripe-integrated payments and a published methodology preprint on OSF. CORE SERVICES: - Complete meta-analyses: random-effects, fixed-effects, multilevel models - Heterogeneity assessment: I², Q-test, prediction intervals, outlier detection - Publication bias: funnel plots, Egger's test, trim-and-fill, p-curve - Subgroup and meta-regression / moderator analyses - Network meta-analysis (intervention comparisons) - Forest plots, funnel plots, and all publication-ready visualizations - AI-assisted interpretation reports (plain-language summaries) - Statistical methodology review for manuscripts pre-submission TOOLS: R (metafor, meta, netmeta, dmetar), Python, FastAPI, Docker PUBLICATIONS: - Published meta-analyses in BMC Psychiatry (320+ citations) - Meta-MAR methodology preprint (OSF, 2026) - Experience with PRISMA 2020, Cochrane methods, GRADE framework DOMAIN EXPERTISE: - Clinical psychology & psychotherapy interventions - ADHD research (PhD focus) - Digital health & physiological data (HRV analysis platform) - Oncology data mapping I deliver clean, reproducible, publication-ready results with full documentation. Typical turnaround: 1-3 weeks depending on scope.

Subject Matter Expertise

• ☆ Statistics
• ☆ Meta-Analysis
• ☆ Health Data Analysis
• ☆ Clinical Psychology
• ☆ Clinical Trials
• ☆ Clinical Trials Data Analysis

Services

• Research
• Consulting
• Data & AI

Research Meta-Research, Scientific and Technical Research, Systematic Literature Review, Secondary Data Collection

Consulting Healthcare Consulting, Scientific and Technical Consulting

Data & AI Statistical Analysis, Data Visualization, Data Insights

Work Experience

Clinical Researcher

LebensWelt gGmbH

March 2022 - Present

Founder/Consultant

Meta-MAR

May 2020 - Present

Data Scientist

RuckiZucki UG

September 2023 - May 2025

Doctoral researcher/Research Assistant

Philipps-Universität Marburg

June 2016 - August 2020

Education

M.Sc. Data Science (Computer Science)

Berlin International University of Applied Sciences

January 2023 - December 2025

PhD. Clinical Psychology (Psychology)

Philipps-Universität Marburg

May 2016 - August 2020

PhD Clinical Psychology

Philipps-Universität Marburg

May 2016 - August 2020

Certifications

• Certification details not provided.

Publications

PREPRINT

Ashkan Beheshti, Mira-Lynn Chavanon, Hanna Christiansen, Hassan Sazmand (2026). Meta-Mar: An AI-Assisted Web Platform for Accessible and Rigorous Meta-Analysis .

JOURNAL ARTICLE

ADHD overdiagnosis and the role of patient gender among Iranian psychiatrists @article{2021, doi = {10.1186/s12888-021-03525-3}, url = {https://doi.org/10.1186%2Fs12888-021-03525-3}, year = 2021, month = {oct}, publisher = {Springer Science and Business Media {LLC}}, volume = {21}, number = {1}, author = {Ashkan Beheshti and Mira-Lynn Chavanon and Silvia Schneider and Hanna Christiansen}, title = {{ADHD} overdiagnosis and the role of patient gender among Iranian psychiatrists}} . BMC Psychiatry.

Hanna Christiansen and Oliver Hirsch and Ashkan Beheshti and Mira-Lynn Chavanon(2021). Emotions or attention – what are predictors for the development of childhood psychopathology? A longitudinal study with pre- and elementary school children . Current Psychology. Springer Science and Business Media {LLC}

Ashkan Beheshti, Mira-Lynn Chavanon, Hanna Christiansen(2020). Emotion dysregulation in adults with attention deficit hyperactivity disorder: a meta-analysis . BMC Psychiatry. 20. (1). Springer Science and Business Media {LLC}