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Statistics review 6: Nonparametric methods.

Whitley E, Ball J - Crit Care (2002)

Bottom Line: The present review introduces nonparametric methods.Three of the more common nonparametric methods are described in detail, and the advantages and disadvantages of nonparametric versus parametric methods in general are discussed.

View Article: PubMed Central - PubMed

Affiliation: University of Bristol, Bristol, UK.

ABSTRACT
The present review introduces nonparametric methods. Three of the more common nonparametric methods are described in detail, and the advantages and disadvantages of nonparametric versus parametric methods in general are discussed.

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Related in: MedlinePlus

Relative risk of mortality associated with developing acute renal failure as a complication of sepsis.
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Related In: Results  -  Collection


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Figure 1: Relative risk of mortality associated with developing acute renal failure as a complication of sepsis.

Mentions: Fig. 1 shows a plot of the 16 relative risks. The distribution of the relative risks is not Normal, and so the main assumption required for the one-sample t-test is not valid in this case. Rather than apply a transformation to these data, it is convenient to use a nonparametric method known as the sign test.


Statistics review 6: Nonparametric methods.

Whitley E, Ball J - Crit Care (2002)

Relative risk of mortality associated with developing acute renal failure as a complication of sepsis.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC153434&req=5

Figure 1: Relative risk of mortality associated with developing acute renal failure as a complication of sepsis.
Mentions: Fig. 1 shows a plot of the 16 relative risks. The distribution of the relative risks is not Normal, and so the main assumption required for the one-sample t-test is not valid in this case. Rather than apply a transformation to these data, it is convenient to use a nonparametric method known as the sign test.

Bottom Line: The present review introduces nonparametric methods.Three of the more common nonparametric methods are described in detail, and the advantages and disadvantages of nonparametric versus parametric methods in general are discussed.

View Article: PubMed Central - PubMed

Affiliation: University of Bristol, Bristol, UK.

ABSTRACT
The present review introduces nonparametric methods. Three of the more common nonparametric methods are described in detail, and the advantages and disadvantages of nonparametric versus parametric methods in general are discussed.

Show MeSH
Related in: MedlinePlus