Statistics review 3: Hypothesis testing and P values

doi:10.1186/cc1868

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Critical Care
Volume 7
Issue 1

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Erratum

Statistics review 3: Hypothesis testing and P values

Elise Whitley¹ and Jonathan Ball²

¹Lecturer in Medical Statistics, University of Bristol, UK

²Lecturer in Intensive Care Medicine, St George's Hospital Medical School, London, UK

author email corresponding author email

Critical Care 2003, 7:15doi:10.1186/cc1868

See related Review: http://ccforum.com/content/6/3/222

Published:

13 December 2002

Erratum

An erratum to Statistics review 3: Hypothesis testing and Pvalues, by Elise Whitley and Jonathan Ball.

In the original version of this article [1], the words 'if the null hypothesis is true' were omitted from the first sentence of the first key message. The key message should have read as follows:

'A P value is the probability that an observed effect is simply due to chance, if the Null hypothesis is true; it therefore provides a measure of the strength of an association. A P value does not provide any measure of the size of an effect, and cannot be used in isolation to inform clinical judgement.'

References

Whitley E, Ball J: Statistics review 3: Hypothesis testing and P values.
Crit Care 2002, 6:222-225. PubMed Abstract | BioMed Central Full Text | PubMed Central Full Text

Statistics review 3: Hypothesis testing and P values

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