agree.icc1 {agRee} | R Documentation |

## Intraclass correlation coefficient for one-way random anova model

### Description

Obtain confidence interval and point estimate of the intraclass correlation coefficient for one-way random anova model (ICC1).

### Usage

```
agree.icc1(ratings, conf.level=0.95, method=c("sf"),
NAaction=c("fail", "omit"))
```

### Arguments

`ratings` |
a matrix of observations with one subject per row and one rater per column. |

`conf.level` |
confidence level of the interval. The default is 0.95. |

`method` |
a character string specifying the method used to obtain confidence interval of the ICC1. Now only the "sf" method is supported. |

`NAaction` |
a character string specifying what should happen
when the data contain |

### Details

The point estimate and confidence interval are based on a one-way random anova model as proposed in Shrout and Fleiss (1979).

### Value

Point estimate of the ICC1 and lower and upper bounds of the confidence interval.

### References

Patrick E Shrout and Joseph L Fleiss (1979).
Intraclass correlations: uses in assessing rater reliability.
*Psychological Bulletin*
**86** 420-428

### Examples

```
data(lesionBurden)
agree.icc1(lesionBurden.M)
```

*agRee*version 0.5-3 Index]