Description Usage Arguments Details Value Examples

View source: R/PrepMissingPattern.R

Given a dataframe Y in which columns represent timepoints and rows represent subjects creates missing data summaries for display using missingPattern.

1 |

`Y` |
Is an N0 by NT dataframe with each column representing timepoints and rows representing subjects. Individual values Y_ij = 0, when the event of interest has not occured for subject i at time j, Y_ij = 1, when the event of interest has occured for subject i at time j, Y_ij = 2 or NA when the measurement of the event of interest for subject i at time j is missing. |

PrepMissingPattern is used in conjunction with missingPattern to produce a simple summary of missing data in a salmb dataframe.

Returns a list with items

`Mat` |
a matrix of frequencies and percentages |

`tots` |
a matrix of subtotals |

`K` |
the number of timepoints (columns) in the original data |

1 2 | ```
data(trt1)
prep1 <- PrepMissingPattern(trt1)
``` |

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