Statistics review 4: sample size calculations.

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.

journal_name

Crit Care

authors

Whitley E,Ball J

doi

10.1186/cc1521

keywords:

subject

Has Abstract

pub_date

2002-08-01 00:00:00

pages

335-41

issue

4

eissn

1364-8535

issn

1466-609X

journal_volume

6

pub_type

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