Calculating the sample size required for developing a clinical prediction modelOPEN ACCESS
BMJ · DOI: 10.1136/bmj.m441
2020
Wolters Kluwer / Lippincott Williams & Wilkins · 2022
A practical guide to planning clinical and public-health studies, covering how to frame a research question, choose a design, estimate sample size and run trials and observational studies. The fifth edition adds chapters on qualitative and community-engaged research and expanded discussion of confounding and directed acyclic graphs.
BMJ · DOI: 10.1136/bmj.m441
Nature Human Behaviour · DOI: 10.1038/s41562-016-0021