Sample Size Estimation

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Sample Size Estimation

Clinical Research · Healthcare Studies · Academic Research

Get The Sample Size Right Before Your Study Begins

At StatsCure Network, sample size is where good research planning starts. Our biostatisticians
provide rigorous, defensible sample size estimation for clinical trials, healthcare and public
health research, pharmaceutical and CRO studies, and academic projects so your study is
powered to answer the question you actually set out to answer.

A sample size that is too small risks an inconclusive study; one that is too large wastes
participants, time, and funding. We help you find the figure that is statistically sound, ethically
justifiable, and practical to recruit.

Why sample size estimation matters

Every credible study design rests on a clear answer to one question: how many participants do we need, and why? A well-justified sample size strengthens the validity of your findings,
satisfies ethics committees and reviewers, and makes the most of limited research resources.

We work directly with your study objectives, design, endpoints, and analysis plan to produce a calculation you can stand behind in your protocol, your ethics submission, your grant application, and your final publication.

How We Work

Our process is structured, transparent, and fully documented at every step so the final number is never a black box. Our Sample Size Estimation services

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Our Sample Size Estimation services

We provide end-to-end support across study types and designs, including :

  • Clinical trial sample size estimation — superiority, non-inferiority, and equivalence designs; parallel-group, crossover, and cluster-randomised trials
  • Time-to-event (survival) and longitudinal endpoints
  • Observational studies — cohort, case-control, and cross-sectional designs
  • Epidemiological and public health research
  • Survey and prevalence studies
  • Diagnostic accuracy and reliability studies
  • Statistical power and precision analysis
  • Sample size re-estimation for adaptive and interim designs
  • Protocol and SAP statistical support
  • Thesis, dissertation, and academic research projects

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What You Receive

  • A detailed sample size calculation report with assumptions clearly stated
  • Power and/or precision analysis across plausible scenarios
  • Effect size assessment and justification
  • Statistical methodology text ready for your protocol or ethics submission
  • Sensitivity analysis showing how the required sample changes with key assumptions
  • Recommendations on design, allocation, and recruitment targets (including dropout adjustment)
  • Support for publication, peer review, and regulatory requirements
  • Direct consultation with an experienced biostatistician

Our reports are written to be understood by clinicians and reviewers, not only statisticians — clear enough to defend, detailed enough to reproduce.

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Frequently asked questions

Start With The Right Number

A well-designed study begins with a well-justified sample size. StatsCure Network provides accurate, transparent, and fully documented sample size estimation that lets you plan with confidence.

Contact StatsCure Network today to discuss your project and receive a sample size solution tailored to your research.

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