Service catalogue

Study Design, Sample Size & Power

We translate a clinical or experimental question into an assessable design before data collection. Sample size follows the objective, meaningful effect and available assumptions.

What you receive

  • Study-design report and sample-size justification.
  • Scenario tables and sensitivity to assumptions.
  • Reproducible code and protocol recommendations.

What is included

  • Define the population, outcome, estimand, comparison and unit of analysis.
  • Assess sample size or precision, power and scenarios for attrition or dependence.
  • Use simulation where appropriate; plan sampling and randomisation sequences against the protocol.

Frequently asked questions

What if pilot data are unavailable?

We use available evidence and plausible ranges to present scenarios, identifying the assumptions driving the result and the information needed before fixing a sample size.

Related services

Discuss your project

Tell us about the objective, study stage and deadline. We review the need and availability; we then define the scope with you and prepare a proposal with deliverables, timing and fees.

Do not email patient, clinical or confidential study data. Access and the working environment are agreed before materials are shared.

Discuss your project