laWRBM {iMRMC} | R Documentation

## MRMC analysis of within-reader between-modality limits of agreement

### Description

The core analysis is done by ustat11 with the difference kernel (kernelFlag = 2). This calculation can also be accomplished by ustat11 with the identity kernel (kernelFlag = 1), and the code to do that is provided after the return statement so it never gets exectuted.

### Usage

    laWRBM(df, modalitiesToCompare, keyColumns = c("readerID", "caseID",
      "modalityID", "score"))

### Arguments

`df`

Data frame of observations, one per row. Columns identify random effects, fixed effects, and the observation. Namely,

- `readerID:` The factor corresponding to the different readers in the study. The readerID is treated as a random effect.

- `caseID:` The factor corresponding to the different cases in the study. The caseID is treated as a random effect.

- `modalityID:` The factor corresponding to the different modalities in the study. The modalityID is treated as a fixed effect.

- `score:` The score given by the reader to the case for the modality indicated.

`modalitiesToCompare` | The factors identifying the modalities to compare.
`keyColumns` | Identify the factors corresponding to the readerID, caseID, modalityID, and score (or alternative random and fixed effects).

[Package iMRMC version 1.2.0 ]