Survival in first year | |

Mortality rate in first year of treatment | 0.06 |

Proportion lost to follow-up | 0.17 |

Mortality rate of those lost to follow-up | 0.47 |

Survival at end of first year | 1−(0.06+(0.17*0.47))=0.86 |

Survival in subsequent years | |

Mortality rate in subsequent years | 0.02 |

Proportion lost to follow-up | 0.17 |

Mortality rate of those lost to follow-up | 0.47 |

Survival in subsequent years | 1−(0.02+(0.17*0.47))=0.90 |