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Last data update: 2014.03.03

R: Intra-Intra Ratio (IIR)

IIR	R Documentation

Intra-Intra Ratio (IIR)

Description

Intra-Intra Ratio (IIR) compares the intra-rater precision among selected raters.

Usage

IIR(data, k, m, testindex, refindex, error, alpha = 0.05)

Arguments

`data`	Name of your dataset.
`k`	Number of methods/raters/instruments/assay, etc.
`m`	Number of replications for each methods/raters/instruments/assay, etc.
`testindex`	The index for the test raters, it must be a numerical vector. For example, if `k=3` and `testindex=c(1,2)`, the first and second rater are selected as the test raters for calculating IIR.
`refindex`	The index for the reference raters, it must be a numerical vector. For example, if `k=3` and `refindex=3`, the third rater is selected as the reference raters for calculating TIR.
`error`	`error="const"` for the constant error structure for continuous data. `error="prop"` for the proportional error structure for continuous data. Here, log transformation to data will be applied for the continuous data. For categorical data, use `error="const"`.
`alpha`	100(1-`alpha`)

Value

Return a list of values

`IIR`	The estimator of IIR.
`IIR_upper`	The upper 1-`alpha`/2 confidence limit for IIR.
`IIR_lower`	The lower 1-`alpha`/2 confidence limit for IIR.

Note

The selected two sets of test and reference raters should be mutually exclusive.

Author(s)

Yue Yu <yyu@imyy.net>

Examples

data(DCLHb);
IIR(DCLHb, k=2,m=2,testindex=1,refindex=2,error="const",alpha=0.05);

Results


R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(Agreement)
Loading required package: R2HTML
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/Agreement/IIR.Rd_%03d_medium.png", width=480, height=480)
> ### Name: IIR
> ### Title: Intra-Intra Ratio (IIR)
> ### Aliases: IIR
> 
> ### ** Examples
> 
> data(DCLHb);
> IIR(DCLHb, k=2,m=2,testindex=1,refindex=2,error="const",alpha=0.05);
$IIR
[1] 0.3482839

$IIR_upper
         [,1]
[1,] 0.642917

$IIR_lower
          [,1]
[1,] 0.1886739

> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>