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Hire Dr. Andrei S.

United States

USD 110 /hr

Freelance Evidence Synthesis Expert with 20+ years of experience in systematic review and meta-analysis.

Profile Summary

I am a versatile and highly skilled evidence synthesis consultant with over 20 years of experience conducting systematic reviews and meta-analyses across a broad range of domains. I have worked on projects in fields including education, labor and employment, health promotion and prevention. This extensive experience demonstrates my ability to adapt to diverse subject areas and research questions, consistently delivering rigorous and insightful evidence summaries. Methodologically, I offer deep expertise in advanced meta-analytic techniques. I am proficient in both frequentist and Bayesian approaches to evidence synthesis, allowing me to choose the most appropriate statistical framework for each project. My skill set includes conducting component-based meta-regressions to disentangle the effects of complex intervention components, as well as implementing robust variance estimation to handle multiple outcomes or correlated data structures. I also emphasize clear evidence translation, ensuring that complex results are distilled into actionable insights and practical recommendations for stakeholders. As a consultant, I pride myself on delivering high-quality, tailored analyses and reports that meet the unique needs of clients across sectors. I am committed to providing comprehensive, reliable, and timely evidence synthesis services to inform decision-making and advance knowledge in any domain.

Subject Matter Expertise

• ☆ Statistics
• ☆ Meta-Analysis
• ☆ Peer Review
• ☆ Systematic Literature Review

Services

• Writing
• Research
• Consulting
• Data & AI
• Product Development

Writing Technical Writing

Research Meta-Research, Systematic Literature Review

Consulting Scientific and Technical Consulting

Data & AI Statistical Analysis

Product Development Product Evaluation

Work Experience

Researcher

Mathematica Policy Research

June 2008 - March 2025

Research analyst

American Institutes for Research

October 2004 - May 2008

Research Associate

Social Capital Development Corporation

January 2001 - May 2002

Research Associate

Tobler Research Associates

October 1998 - December 2000

Education

PhD Sociology

University at Albany, State University of New York

September 1993 - May 2004

Master of Arts, Sociology

University of Arizona

August 1990 - August 1992

Bachelors

Moscow Institute of National Economy

September 1986 - June 1990

Certifications

• What Works Clearinghouse Certified Reviewer (Group Design, Single-Case Design, and Regression Discontinuity Design; Versions 4.1 and 5.0)

  Institute for Education Sciences

  April 2020 - Present

• IT Specialist: Artificial Intelligence Certification

  Northern Virginia Community College

  April 2025 - May 2025

Publications

OTHER

Streke, A., E. Denk, E. Forrester, and R. Cole. “Component Meta-Regression of Teen Pregnancy Prevention Evidence Review Studies: Technical Appendices.” Washington, DC: Office of Population Affairs, U.S. Department of Health and Human Services, 2025.

Streke, A., E. Denk, J. Lugo-Gil, and R. Cole. “Meta-Analysis Report of Teen Pregnancy Prevention Evidence Review (TPPER) Studies: Technical Appendices.” Washington, DC: Office of the Assistant Secretary for Planning and Evaluation, U.S. Department of Health and Human Services, 2024.

Walsh, E., J. Deke, S. Robles, A. Streke, and D. Thal. “Using Bayesian Meta-Analysis to Explore the Components of Early Literacy Interventions (WWC 2023-006).” Washington, DC: National Center for Education Evaluation and Regional Assistance, Institute of Education Sciences, U.S. Department of Education, 2023 .

Streke, Andrei, and Dana Rotz. “Synthesis Report: What Works to Improve Employment and Earnings for People with Low Incomes?” OPRE Report #2022-51. Washington, DC: Office of Planning, Research, and Evaluation, Administration for Children and Families, U.S. Department of Health and Human Services, 2022.

Stanczyk, Alexandra, Dana Rotz, Erin Welch, and Andrei Streke. “Synthesis Report: What Works During Economic Recessions and Recoveries? Evidence from the Pathways Clearinghouse.” OPRE Report #2021-229. Washington, DC: Office of Planning, Research, and Evaluation, Administration for Children and Families, U.S. Department of Health and Human Services, 2021.

Richman, Scott, and Andrei Streke. “Evidence of Effectiveness in AmeriCorps-Funded Interventions.” Report submitted to AmeriCorps. Chicago: Mathematica, September 2020.

Richman, S., A. Streke, and K. Needels. “Evidence of Effectiveness in CNCS-Funded Interventions: Second Year Findings.” Chicago: Mathematica, September 2019.

Dolfin, S., S. Richman, J. Choi, A. Streke, C. DeSaw, A. Demers, and D. Poznyak. “Evaluation of the Teacher Potential Project.” Washington, DC: Mathematica, June 2019.

Richman, S., M.A. Anderson, A. Streke, and K. Eddins. “Evidence of Effectiveness: Intervention Evidence Across the AmeriCorps and Social Innovation Fund Programs.” Chicago: Mathematica Policy Research, November 2017.

Foorman, B., N. Beyler, K. Borradaile, M. Coyne, C.A. Denton, J. Dimino, J. Furgeson, L. Hayes, J. Henke, L. Justice, B. Keating, W. Lewis, S. Sattar, A. Streke, R. Wagner, and S. Wissel. “Foundational Skills to Support Reading for Understanding in Kindergarten Through 3rd Grade.” NCEE Report 2016-4008. Washington, DC: U.S. Department of Education, Institute of Education Sciences, National Center for Education Evaluation and Regional Assistance, 2016.

Streke, Andrei. “Meta-Analysis of Community-Based Adolescent Drug Prevention Programs.” Unpublished doctoral dissertation. Albany, NY: University at Albany, 2004.

JOURNAL ARTICLE

Shiferaw, L., S. Dolfin, and A. Streke. “The Effects of Employment and Training Programs for Populations with Low Incomes: Evidence from the Pathways Clearinghouse.” Journal of Labor Research, vol. 45, no. 3- 4, 2024, pp. 385-402 .

Tobler, N.S., M.R. Roona, P. Ochshorn, D.G. Marshall, A.V. Streke, and K.M. Stackpole. “School-Based Adolescent Drug Prevention Programs: 1998 Meta-Analysis.” Journal of Primary Prevention, vol. 20, no. 4, 2000, pp. 275-336 .

BOOK CHAPTER

Streke, Andrei. “Effect Size.” In Encyclopedia of Education Economics and Finance, edited by D. Brewer and L. Picus. Los Angeles: SAGE Publications, 2014.

Streke, Andrei, Michael Roona, and Diana Marshall. “Substances, Childhood (Meta-Analysis).” In Encyclopedia of Primary Prevention and Health Promotion, edited by T. Gullotta, and M. Bloom. New York: Kluwer Academic/Plenum Publishers, 2003, pp. 1059 1065.

Roona, Michael, Andrei Streke, and Diana Marshall. “Substances, Adolescence (Meta-Analysis).” In Encyclopedia of Primary Prevention and Health Promotion, edited by T. Gullotta, and M. Bloom. New York: Kluwer Academic/Plenum Publishers, 2003, pp. 1073 1079.