n_fix,FarringtonManning-method | R Documentation |

Returns the sample size of a fixed design without sample size recalculation.

```
## S4 method for signature 'FarringtonManning'
n_fix(design, nuisance, rounded = TRUE, ...)
```

`design` |
Object of class |

`nuisance` |
Value of the nuisance parameter. For the Farrington-Manning test this is the overall response rate. |

`rounded` |
Whether the calculated sample size should be rounded up such that the allocation ratio is preserved. |

`...` |
Further optional arguments. |

The method is only vectorized in either `nuisance`

or `n1`

.

One value of the fixed sample size for every nuisance parameter and every value of n1.

```
d <- setupFarringtonManning(alpha = 0.025, beta = 0.2, r = 1,
delta = 0, delta_NI = 0.25)
n_fix(d, nuisance = 0.3)
```

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