Driving Efficiency in Clinical Trials through Biostatistics

From introducing the concept of “correlation” to helping many scientists and researchers, biostatistics has played a vital role in their analysis since the beginning. Biostatistics has been used in medical and clinical research, health management, and many other fields. It plays a vital role in evidence-based drug development processes and conducts prior research, yielding accurate results when around 10% of the new compounds reach the market. Consequently, the demand for advanced biostatistics has increased, which has sped up the process, reduced the risk of poor drug quality, and made it more cost-efficient. 

In this blog, we learn about the crucial role of biostatistics and its significance in clinical trials. Let’s examine the study of its performance, from the design to the analysis and interpretation of results, and the critical role biostatisticians play.

Biostatistics in Clinical Trials

Biostatistics is involved in every step of clinical research, encompassing trial designs, protocol development, data management and monitoring, and clinical trial reporting. It specializes in study designs, therapeutic areas, and statistical methods. 

Important Role of Biostatisticians in Clinical Trials

Biostatisticians are involved in clinical trial management right from the start to enhance the chance of a new drug or device approval. They work closely with the management and biometrics teams throughout the study, including statistical programmers, medical writers, data managers, and other clinical research services. 

The steps involved in the clinical trials are: 

Study designing phase

Biostatisticians begin their work with the designing, and planning phases before any study is conducted. They work closely with the clinical research team to study the objectives and endpoints. They map out the statistical problems that could affect the research and determine the sample size. Statistical calculations determine the minimum number of patients to detect a clinically different treatment group. 

Randomization and blinding

  • Biostatisticians support the crucial responsibility of randomization and blinding procedures for the clinical trial. 
  • The combination lies in carefully treating all the parameters of the randomization list, which ensures the allocation of participants across the control groups and treatments. 
  • Incorrect randomization can introduce bias, compromising the reliability and validity of the study results. 


  • The procedures with blinding play a pivotal role in maintaining the integrity of the trial by ensuring that both investigations and participants remain unaware of the assignment treatments. This protects against potential bias and guarantees outcomes that genuinely reflect the safety and efficacy of the tested intervention.

Primary responsibilities of biostatisticians during clinical trials

  • After the data management team collects the data, the statisticians will guarantee that the data is of high quality and has no errors or inconsistencies by doing quality control checks to understand the data’s accuracy. 
  • They also significantly contribute to the running evaluation of the clinical trial.
  • Biostatisticians submit analysis reports to the Data and Security Monitoring Board (DSMB). This governing body oversees trial safety, which later provides insights into the treatment’s safety profile, allowing informed decisions regarding the patient’s well-being and the trial’s contribution. 
  • Biostatisticians also conduct analyses in trials, safety and efficacy assessments, sample size adequacy, and evaluation of progression.

Regarding data management, the biostatisticians assist with developing the CRF (Case Report Form) and dataset specifications. They also ensure data formatting in medical writing and the statistical part of the clinical study reports. They are also responsible for defining sample size, which involves several factors that influence the size of the study, timelines, and budget requirements. 


As we explore the ever-changing perspectives of healthcare, biostatistics is considered the backbone of clinical trials, which drives innovation and catalyzes advancements in search of improved patient outcomes, shaping the trajectory of medical progress. Biostatisticians play a vital role in study design and data analysis, ensuring the validity, reliability, and ethical conduct of clinical research. 

Global Pharma Tek is your trusted partner that provides extensive support throughout the drug development process with biostatistics services in manufacturing and research, like protocol review, statistical support and study reports, CRF and dairy review, statistical programming and modelling, tables, listings and design generation, regulatory statistical consulting, statistical support for study reports like manuscripts, CSR and brochures, etc.

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