Work

Statistics review 4: sample size calculations.

Year: 2002

Type: article

Abstract: The present review introduces the notion of statistical power and the hazard of under-powered studies. The problem of how to calculate an ideal sample size is also discussed within the context of factors that affect power, and specific methods for the calculation of sample size are presented for two common scenarios, along with extensions to the simplest case.

Source: Critical Care

DOI: 10.1186/cc1521

Authors: Elise Whitley, Jonathan Ball

Institutions: University of Bristol, St George's, University of London

Language: English

Topic: Statistical Methods in Epidemiology

Subfield: Statistics and Probability

Field: Mathematics

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $4,190