nnt: Number Needed to Treat Calculation From a 2x2 Table
In ClinSigMeasures: Clinical Significance Measures
Description
Usage
Arguments
Value
Author(s)
References
Examples
Description
Calculates number needed to treat and 95 percent confidence intervals for data from a 2x2 table
Usage
1
nnt(Cell1, Cell2, Cell3, Cell4)
Arguments
Cell1
Value for cases with a positive outcome
Cell2
Value for cases with a negative outcome
Cell3
Value for controls with a positive outcome
Cell4
Value for controls with a negative outcome
Value
Number Needed to Treat and 95 percent confidence intervals
Author(s)
Mike Malek-Ahmadi
References
1. Cook RJ, Sackett DL. The number needed to treat: a clinically useful measure of treatment effect [published correction appears in BMJ 1995 Apr 22;310(6986):1056]. BMJ. 1995;310(6977):452-454.
2. Zar HJ, Cotton MF, Strauss S et al Effect of isoniazid prophylaxi on mortality of tuberculosis in children with HIV: randomised controlled trial. BMJ 2007; 136-9.
Examples
1
2
3
#Mortality data from Zar et al (2007)
nnt(121, 11, 110, 21)
ClinSigMeasures documentation built on Feb. 25, 2021, 5:08 p.m.
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Description Usage Arguments Value Author(s) References Examples
Description
Calculates number needed to treat and 95 percent confidence intervals for data from a 2x2 table
Usage
1 | nnt(Cell1, Cell2, Cell3, Cell4)
|
Arguments
Cell1 |
Value for cases with a positive outcome |
Cell2 |
Value for cases with a negative outcome |
Cell3 |
Value for controls with a positive outcome |
Cell4 |
Value for controls with a negative outcome |
Value
Number Needed to Treat and 95 percent confidence intervals
Author(s)
Mike Malek-Ahmadi
References
1. Cook RJ, Sackett DL. The number needed to treat: a clinically useful measure of treatment effect [published correction appears in BMJ 1995 Apr 22;310(6986):1056]. BMJ. 1995;310(6977):452-454.
2. Zar HJ, Cotton MF, Strauss S et al Effect of isoniazid prophylaxi on mortality of tuberculosis in children with HIV: randomised controlled trial. BMJ 2007; 136-9.
Examples
1 2 3 | #Mortality data from Zar et al (2007)
nnt(121, 11, 110, 21)
|
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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