Department of Biostatistics & Data Science

Office of Biostatistics Consulting Services

The Office of Biostatistics (OBIOS) has a primary responsibility for providing statistical support services to all faculty, staff and students at The University of Texas Medical Branch at Galveston (UTMB Health).

Our Services

Office of Biostatistics Services

  • Design Support
    Includes producing power calculations, determining sample size, designing studies that minimize the effects of measurement and experimental error, and identifying appropriate methods for data collection, summary and analysis.
  • Adaptation and Development
    Includes quantitative research that will produce improved methods and procedures to collect, manage, analyze and interpret biomedical data.  This usually occurs during a long-term collaboration between a UTMB researcher and a member of the Office of Biostatistics.
  • Software Support
    The OBIOS provides support for the computer package SAS® and GraphPad Prism. Both are statistical software with extensive data management capabilities. The OBIOS also maintains and supports ArcGIS, a mapping and spatial analysis program; and TreeAge, a visual modeling tool for building and analyzing decision trees for cost-effectiveness analyses.
  • Database Design
    Includes developing project specific systems for data acquisition, scheduling, and modification. Data management includes maintaining data bases and preparing databases for analysis. Data analysis includes identifying and applying appropriate numerical procedures to allow valid statistical inferences.
  • Special Services
    Are available to assist with the conceptualization, formulation, design, use and codification of these data gathering tools.  Pilot testing, training, operational evaluation and analytic support can be obtained on a project specific basis.
  • MarketScan
    OBIOS will maintain the Merative MarketScan database, which contains longitudinal medical, and pharmacy claims for over 273 million unique enrollees from 500 hospitals, 120 contributing employers, and 40 unique health plans in the US.

Our Personnel

Office of Biostatistics - Personnel

  • Monica Cline
    Research Project Coordinator
    Office of Biostatistics
  • Samuel V. David, MPH
    Statistical Assistant
    Data Analysis, Data Management
  • Biai Digbeu, MPH
    Biostatistician I
    Epic Certified Programmer, SAS® Certified Programmer, Medicare Data, Data analysis, Data Management
  • Daoqi Gao, MS

    Biostatistician I
    SAS® Certified Programmer, Data Analysis, Data Management

  • Ioannis Malagaris, PhD, MS, MPH

    Biostatistician I
    Statistical Programming, Data Management, Medicare Data

  • Efstathia Polychronopoulou, MS

    Biostatistician I
    Epic Certified Programmer, Data Management, Medicare Data, Logistic Regression

  • Yong Shan, PhD
    Biostatistician II
    Data Analysis, Survival Analysis
  • Md Ibrahim Tahashilder, MS
    Biostatistician I
    SAS® Certified Programmer, Data Analysis, Data Management
  • Jordan Westra, MPH

    Biostatistician II
    Medicare Data, Data analysis, Data Management

  • Yuanyi Zhang, PhD

    Biostatistician I
    Epic Certified Programmer, Data Management, Data Analysis, Database Design and Administrative Bioinformatics

Our Rates

Initial consultations and grant development are provided at no cost. Statistical services may be paid for by including portions of a staff member's salary on funded projects or statistical services may be billed on an hourly basis.


UTMB Rates

UT System Rate

Other Academic Rates

Industry Rates

Senior Biostatistician















OBIOS aims to provide high-quality statistical and scientific output for UTMB. Adhering to these expectations ensures a smooth and efficient research process. For further questions or concerns, please see our Consulting Service Policy or contact the Director of OBIOS

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