# influence.ME: Tools for Detecting Influential Data in Mixed Effects Models

Provides a collection of tools for detecting influential cases in generalized mixed effects models. It analyses models that were estimated using 'lme4'. The basic rationale behind identifying influential data is that when iteratively single units are omitted from the data, models based on these data should not produce substantially different estimates. To standardize the assessment of how influential a (single group of) observation(s) is, several measures of influence are common practice, such as DFBETAS and Cook's Distance. In addition, we provide a measure of percentage change of the fixed point estimates and a simple procedure to detect changing levels of significance.

- Author
- Rense Nieuwenhuis, Ben Pelzer, Manfred te Grotenhuis
- Date of publication
- 2016-10-31 10:07:54
- Maintainer
- Rense Nieuwenhuis <rense.nieuwenhuis@sofi.su.se>
- License
- GPL-3
- Version
- 0.9-8
- URLs

## Man pages

- cooks.distance.estex
- Compute the Cook's distance measure of influential data on...
- dfbetas.estex
- Compute the DFBETAS measure of influential data
- exclude.influence
- Exclude the influence of a grouped set of observations in...
- grouping.levels
- Returns the levels of a grouping factor in a mixed effects...
- influence.ME-package
- Influence.ME: Tools for detecting influential data in mixed...
- influence.mer
- influence returns mixed model estimates, iteratively...
- pchange
- Compute the percentage change, as measure of influential data
- plot.estex
- Dotplot visualization of measures of influence
- school23
- Math test performance in 23 schools
- se.fixef
- Standard errors of fixed estimates
- sigtest
- Test for changes in the level of statistical significance...

## Files in this package

influence.ME |

influence.ME/inst |

influence.ME/inst/CITATION |

influence.ME/NAMESPACE |

influence.ME/data |

influence.ME/data/school23.rda |

influence.ME/R |

influence.ME/R/exclude.influence.R |

influence.ME/R/plot.estex.R |

influence.ME/R/cooks.distance.extex.r |

influence.ME/R/sigtest.R |

influence.ME/R/dfbetas.estex.r |

influence.ME/R/pchange.R |

influence.ME/R/grouping.levels.R |

influence.ME/R/influence.R |

influence.ME/R/se.fixef.R |

influence.ME/MD5 |

influence.ME/DESCRIPTION |

influence.ME/man |

influence.ME/man/sigtest.Rd |

influence.ME/man/plot.estex.Rd |

influence.ME/man/influence.ME-package.Rd |

influence.ME/man/se.fixef.Rd |

influence.ME/man/grouping.levels.Rd |

influence.ME/man/dfbetas.estex.Rd |

influence.ME/man/influence.mer.Rd |

influence.ME/man/exclude.influence.Rd |

influence.ME/man/school23.Rd |

influence.ME/man/pchange.Rd |

influence.ME/man/cooks.distance.estex.Rd |