specificity {ClinSigMeasures}

specificity Calculation From a 2x2 Table

Description

Calculates diagnostic test specificity and 95 percent confidence intervals for data from a 2x2 table

Usage

specificity(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

Specificity and 95 percent confidence intervals

Author(s)

Mike Malek-Ahmadi

References

1. Trevethan R. Sensitivity, specificity, and predictive values: Foundations, pliabilities, and pitfalls in research and practice. Frontiers in Public Health 2017;5:307.

2. Weissberger GH, Strong JV, Stefanidis KB, Summers MJ, Bondi MW, Stricker NH. Diagnostic accuracy of memory measures in Alzheimer's dementia and mild Cognitive Impairment: a Systematic Review and Meta-Analysis. Neuropsychol Rev. 2017;27(4):354-388.

Examples

#Specificity calculation from Figure 11, Line 22 of Weissberger et al

specificity (121, 50, 13, 199)