Other packages > Find by keyword >

papci  

Prevalence Adjusted PPV Confidence Interval
View on CRAN: Click here


Download and install papci package within the R console
Install from CRAN:
install.packages("papci")

Install from Github:
library("remotes")
install_github("cran/papci")

Install by package version:
library("remotes")
install_version("papci", "0.1.0")



Attach the package and use:
library("papci")
Maintained by
Cui Guo
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2021-09-14
Latest Update:
Description:
Positive predictive value (PPV) defined as the conditional probability of clinical trial assay (CTA) being positive given Companion diagnostic device (CDx) being positive is a key performance parameter for evaluating the clinical validity utility of a companion diagnostic test in clinical bridging studies. When bridging study patients are enrolled based on CTA assay results, Binomial-based confidence intervals (CI) may are not appropriate for PPV CI estimation. Bootstrap CIs which are not restricted by the Binomial assumption may be used for PPV CI estimation only when PPV is not 100%. Bootstrap CI is not valid when PPV is 100% and becomes a single value of [1, 1]. We proposed a risk ratio-based method for constructing CI for PPV. By simulation we illustrated that the coverage probability of the proposed CI is close to the nominal value even when PPV is high and negative percent agreement (NPA) is close to 100%. There is a lack of R package for PPV CI calculation. we developed a publicly available R package along with this shiny app to implement the proposed approach and some other existing methods.
How to cite:
Cui Guo (2021). papci: Prevalence Adjusted PPV Confidence Interval. R package version 0.1.0, https://cran.r-project.org/web/packages/papci. Accessed 26 Jun. 2026.
Previous versions and publish date:
0.1.0 (2021-09-14 09:00)
Other packages that cited papci R package
View papci citation profile
Other R packages that papci depends, imports, suggests or enhances
Complete documentation for papci
Functions, R codes and Examples using the papci R package
Some associated functions: agreement . papciUI . 
Some associated R codes: agreement.R . papciUI.R .  Full papci package functions and examples
Downloads during the last 30 days

Today's Hot Picks in Authors and Packages

infotheo  
Information-Theoretic Measures
Implements various measures of information theory based on several entropy estimators. ...
Download / Learn more Package Citations See dependency  
ggblanket  
Simplify 'ggplot2' Visualisation
Simplify 'ggplot2' visualisation with 'ggblanket' wrapper functions. ...
Download / Learn more Package Citations See dependency  
colormap  
Color Palettes using Colormaps Node Module
Allows to generate colors from palettes defined in the colormap module of 'Node.js'. (see ...
Download / Learn more Package Citations See dependency  
poptrend  
Estimate Smooth and Linear Trends from Population Count Survey Data
Functions to estimate and plot smooth or linear population trends, or population indices, from anim ...
Download / Learn more Package Citations See dependency  
PoisBinOrdNor  
Data Generation with Poisson, Binary, Ordinal and Normal Components
Generation of multiple count, binary, ordinal and normal variables simultaneously given the marginal ...
Download / Learn more Package Citations See dependency  
quickcode  
Quick and Essential 'R' Tricks for Better Scripts
The NOT functions, 'R' tricks and a compilation of some simple quick plus often used 'R' codes to im ...
Download / Learn more Package Citations See dependency  

27,535

R Packages

236,180

Dependencies

73,223

Author Associations

27,536

Publication Badges

© Copyright since 2022. All right reserved, rpkg.net.  Based in Cambridge, Massachusetts, USA