What Does a Biostatistician Do?

Written by: Mike Wood
Published on: 19 Nov 2019

What does a Biostatistician (BST) do?

A biostatistician uses mathematics and statistics to design experiments for medicines. They are responsible for collecting and summarising the results, and typically publishing those results. As a critical member of a research team they often write papers based their research and area of expertise. They use applied and theoretical statistical methods to continually advance the science of data analysis.

Typically, a Biostatistician:

  • Reports to, and receives instructions from, the Clinical Trial Manager (CTM)
  • Secures clinical data from the Clinical Data Manager (CDM) and does the necessary statistical analyses on the data
  • Interprets the meaning of the statistical outputs coming from the different statistical analyses
  • Assists the CTM inwriting the final technical paper, especially on the section of “Statistical Analyses”
  • Works closely with, and gives instructions to, the CDM with due permission from the CTM
  • Performs other duties that may be assigned by the CTM.

Qualifications / Experiences Required

  • Graduate of Bachelor of Science in Statistics, or Bachelor of Science in Mathematics with major in Statistics
  • Preferably with some units in courses related to marketing, business, or life sciences
  • Has worked in a pharmaceutical company, or related field, for at least 3 years as Clinical Research Associate, or Biostatistician.


A Biostatistician, after at least 3 years, might progress to Clinical Data Manager, or Clinical Trial Manager.