Description Usage Arguments Value References Examples

The `AED1_SSR.N2()`

is used to calculated the sample size
required at the second stage of the Adaptive Enrichment Design (Strategy 1)
with Sample Size Re-estimation Procedure.

1 | ```
AED1_SSR.N2(c, z1, N1, beta)
``` |

`c` |
The critical value used at the final analysis |

`z1` |
The test statistic obtained at the interim analysis |

`N1` |
The sample size used at the first stage |

`beta` |
The (1 - power) |

The Value of the re-estimated sample size

Zhao Yang, Ruitao Lin, Guosheng Yin and Ying Yuan. (2018) Sample Size Re-estimation in Adaptive Enrichment Trials. (Under Preparation)

1 2 3 4 5 |

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