Calculates the survival probability for censoring i.e. P(C > tt) where C is censoring; used in inverse probability of censoring weights (IPCW). This function is called by Wi.FUN; this function should not be called on its own.

1 |

`tt` |
the time (or vector of times) at which the survival probability should be estimated. |

`data` |
n by k matrix, where k>=2. A data matrix where the first column is XL = min(TL, C) where TL is the time of the long term event, C is the censoring time, and the second column is DL =1*(TL<C) |

`type` |
type sent to survfit function, default is "fl". |

`weight.given` |
a weight to be used in estimation. |

survival probability for censoring at time tt

Layla Parast

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