EventPredPriorDistribution | R Documentation |

This function can be used for calculating the parameters of prior gamma distributions for the event hazard rate, patient dropout hazard rate and patient enrollment rate in the `EventPred`

function. For an example of the function call, see EventPredExample.

```
EventPredPriorDistribution(expected, uncertainty)
```

`expected` |
Numeric value defining the expected value of the event hazard rate, patient dropout hazard rate or patient enrollment rate. This value must be positive. |

`uncertainty` |
Numeric value defining the amount of uncertainly around the expected value defined above. As a general guideline, the uncertainty parameters of 0.1, 0.3 and 0.5 define high-confidence, medium-confidence and low-confidence prior distributions. This value must be between 0 and 1. |

The function returns a numeric vector with the shape and rate parameters of the prior gamma distribution.

`EventPred`

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