# Estimation of the expected number of deaths.

### Description

Estimation of the expected number of deaths in a screening program using the method proposed by Sasieni (2003).

### Usage

1 | ```
est.expDeath(contribution, incid, cox, fuzz, covnames)
``` |

### Arguments

`contribution` |
An object of contributions produced by the function |

`incid` |
A matrix containing: the incidences, the value of the covariates and the person-years at risk, in that order. It can be obtained with the function |

`cox` |
An oject of class |

`fuzz` |
Numerical precision is problematic when it comes to test equality between objects. The option |

`covnames` |
An alphanumeric vector containing the names of the covariates used to estimate the survival in the cohort of non-participants, that is, the names of the covariates used to obtain the |

### Value

Returns the expected number of deaths

### Note

A complete example of usage is provided in the help page of the `screening`

dataset.

### Author(s)

Denis Talbot, Thierry Duchesne, Jacques Brisson, Nathalie Vandal.

### References

Sasieni P. (2003) *On the expected number of cancer deaths during follow-up of an initially cancer-free cohort*.
Epidemiology, 14, 108-110.

### See Also

`var.expDeath`

,`inference.SMR`

, `screening`

### Examples

1 2 3 4 5 6 7 8 9 10 11 12 | ```
#This example uses pre-built objects and shows the simple usage
#of the est.expDeath function when those objects already exists.
#For an example of how to built those object, refer to the
#help page of the screening dataset.
data(req.objects);
cox.data = req.objects$cox.data;
#Remove "#" to run example :
#est.expDeath(req.objects$contribution,req.objects$incid,req.objects$cox,fuzz = 0.01,
#req.objects$covnames);
#[1] 33.44264
``` |