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MethComp (version 1.30.0)

Analysis of Agreement in Method Comparison Studies

Description

Methods (standard and advanced) for analysis of agreement between measurement methods. These cover Bland-Altman plots, Deming regression, Lin's Total deviation index, and difference-on-average regression. See Carstensen B. (2010) "Comparing Clinical Measurement Methods: A Practical Guide (Statistics in Practice)" for more information.

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Install

install.packages('MethComp')

Monthly Downloads

308

Version

1.30.0

License

GPL (>= 2)

Maintainer

Last Published

January 19th, 2020

Functions in MethComp (1.30.0)

Convert DA to (classical) regression

Merits of two instruments designed to measure certain aspects of human lung function (Vital Capacity)

Passing-Bablok regression

Compute Lin's Total deviation index

Derive linear conversion coefficients from a set of indeterminate coefficients

Simulate a dataframe containing replicate measurements on the same items using different methods.

Measurement of cardiac output by two different methods.

Add regression lines to a plot

Peak Expiratory Flow Rate (PEFR) measurements with Wright peak flow and mini Wright peak flow meter.

Summarize conversion equations and prediction intervals between methods.

Functions to handle transformations of measurement results.

Functions to handle transformations of measurement results.

Functions to convert between long and wide representations of data

Print a MCmcmc object

Glucose measurements by different methods

A MCmcmc object from the hba1c data

Perception of points in a swarm

Function to identify the extremes of a vector

Measurements of subcutaneous and visceral fat

Manipulate the replicate numbering within (item,method)

Classical association measures

Measurement of fat content of human milk by two different methods.

Create a pairs plot for an MCmcmc object

Subset an MCmcmc object

Measurement of oxygen saturation in blood

Measurements of HbA1c from Steno Diabetes Center

Summary for Meth obect

Function to identify the middle of a vector

Summarize conversion equations and prediction intervals between methods.

Bland-Altman plot of differences versus averages.

A MCmcmc object from the oximetry data.

Measurements of plasma volume measured by two different methods.

Sample Meth object with replacement

Predict results from PBreg object

Relative renal function by Scintigraphy

Systolic blood pressure measured by three different methods.

A MCmcmc object from the sbp data

Plot estimated conversion lines and formulae.

Convert DA to (classical) regression

Functions to graphically assess the convergence of the MCMC-simulation in a MCmcmc object

Functions to convert between long and wide representations of data

Measurements of Cardiac output.

Data from a rating experiment of recorgnizing point counts.

Enzyme activity data

Make a regression of differences on averages

Estimate in a method comparison model with replicates

Bias and variance components for a Bland-Altman plot.

Fit a model for method comparison studies using WinBUGS

Regression with errors in both variables (Deming regression)

Create a Meth object representing a method comparison study