Calculate how many patients/participants you need in a study
The Emergency Medical Journal (EMJ) has published a study on sample size estimation which may help you in this area.
However NIHR applications, clinical trials and other forms of study will require formal sample size/power calculations. Applicants are strongly advised to seek formal statistical advice from:
- Research Design Service (NIHR applications only)
- University colleagues
- Other formal statistical advisors
NIHR guidance for sampling and sample size calculation