lr_neg: Likelihood Ratio Negative Calculation From a 2x2 Table

In ClinSigMeasures: Clinical Significance Measures

Likelihood Ratio Negative Calculation From a 2x2 Table

Description

Calculates diagnostic test likelihood ratio negative and 95 percent confidence intervals for data from a 2x2 table

Usage

lr_neg(Cell1, Cell2, Cell3, Cell4)

Arguments

Cell1	Value for cases with a positive test
Cell2	Value for controls with a positive test
Cell3	Value for cases with a negative test
Cell4	Value for controls with a negative test

Value

Likelihood Ratio Negative and 95 percent confidence intervals

Author(s)

Mike Malek-Ahmadi

References

1. Grimes DA, Schultz KF. Refining clinical diagnosis with likelihood ratios. Lancet 2005;365:1500-1505.

2. Dujardin B, Van den Ende J, Van Gompel A, Unger JP, Van der Stuyft P. Likelihood ratios: a real improvement for clinical decision making? European Journal of Epidemiology 1994 Feb;10(1):29-36.

Examples

#From Table 1 in Dujardin et al (1994)

lr_neg(72, 9, 25, 137)

ClinSigMeasures documentation built on July 1, 2024, 9:07 a.m.