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The Department of Surgery has a part-time PhD level biostatistician and a full-time master level biostatistician, offering assistance to all department faculty and residents in all aspects of biostatistics. 


Before Data Collection

  • Study Design
  • Randomization Planning
  • Sample Size & Statistical Power Calculations
  • Formulation of Statistical Analysis Plan
  • Preparation of Grant Proposal

After Data Collection

  • Advice on Analyzing Data
  • Selection of Appropriate Statistical Tests
  • Setting up of Dataset for Analysis
  • Data Management
  • Conduct of Statistical Analysis
  • Interpretation of Statistical Results
  • Display of Data & Results
  • Writing Statistical Methods and Power Analysis sections for Publication
Contact Us

Jim Y. Wan, PhD
Department of Preventive Medicine
66 N. Pauline St., Suite 656
Memphis, TN 38163
P: (901) 448-8221

Lei (Isaac) Dong, MS
Data Analyst
Department of Surgery
910 Madison Ave., Suite 208
Memphis, TN 38163
P: (901) 448-5253

Faculty and residents in need of the service may follow these procedures to obtain biostatistical consultation:

  • Please contact Mr. Dong/Dr. Wan by email to establish a time for initial project consultation. Initial consultation must include the Department of Surgery faculty member. (E.g. not just research trainee)
  • Currently, as the program develops, there are no fees or chargebacks. (Inclusion of budget support for Core-assisted grant applications is required)
  • Projects are subject to prioritization with consideration of several factors including funding status and purpose.
  • Minimal lead times for requested work will vary based on complexity and purpose.
  • Projects will require all necessary regulatory approval (e.g. IRB) prior to initiation.

Faculty & Staff

Jim Y. Wan, PhD


Lei (Isaac) Dong, MS
Data Analyst


May 26, 2022