Description Usage Arguments Details Value Author(s) References Examples

This index calculates a value such that a certain fraction of difference between methods will be numerically smaller than this. The TDI is a measure which esentially is a number K such that the interval [-K,K] contains the limits of agreement.

1 | ```
TDI(y1, y2, p = 0.05, boot = 1000, alpha = 0.05)
``` |

`y1` |
Measurements by one method. |

`y2` |
Measurements by the other method. |

`p` |
The fraction of items with differences numerically exceeding the TDI |

`boot` |
If numerical, this is the number of bootstraps. If |

`alpha` |
1 - confidende degree. |

If `boot==FALSE`

a single number, the TDI is returned.
If `boot`

is a number, the median and the 1-`alpha`

/2 central interval
based on `boot`

resamples are returned too, in a named vector of length 4.

A list with 3 components. The names of the list are preceeded by the criterion percentage, i.e. the percentage of the population that the TDI is devised to catch.

`TDI` |
The numerically computed value for the TDI. If |

`TDI` |
The approximate value of the TDI |

`Limits of Agreement` |
Limits of agreement |

Bendix Carstensen, bendix.carstensen@regionh.dk

LI Lin: Total deviation index for measuring individual agreement with applications in laboratory performance and bioequivalence, Statistics in Medicine, 19, 255-270 (2000)

1 2 3 |

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