TITLE

Introduction to biostatistics: Part 3. Statistical approaches to uncertainty: P values and confidence intervals unpacked

AUTHOR(S)
Doll, Helen; Carney, Stuart
PUB. DATE
May 2006
SOURCE
ACP Journal Club;May/Jun2006, Vol. 144 Issue 3, pA8
SOURCE TYPE
Academic Journal
DOC. TYPE
Editorial
ABSTRACT
The article presents information related to statistical uncertainty. Statistical uncertainty is the uncertainty associated with the use of sample data to make statements about the wider population. Either hypothesis tests, with the calculation of P values, or confidence intervals (CIs) can quantify the amount of statistical uncertainty present in a study, though CIs are usually preferred. P values are used to assess whether a sample estimate is significantly different from a hypothesized value. The CI provides a range of values whose limits are, with specified probability, the smallest and the largest true population values consistent with the sample data.
ACCESSION #
21490766

 

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