# Obtain estimated coefficients from WCE object

### Description

This function extracts the estimated coefficients from a WCE object.

### Usage

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### Arguments

`object` |
A WCE object. |

`...` |
Optional. Additional arguments to be passed to |

### Value

The function returns a list with one element if the WCE object was fitted without covariates and two if the WCE object was fitted with covariates. The first element is a matrix of estimated coefficients for the artificial D variables (see Sylvestre and Abrahamowicz, 2009). Each row of the matrix corresponds to a model with the number of knots specified in `WCE`

. The second element of the list is a matrix of estimated covariate coefficients. Similarly, each row of the matrix corresponds to a model with the number of knots specified in `WCE`

.

`WCEest` |
Matrix of estimated coefficients of the artificial D variables. |

`covariates ` |
Matrix of estimated coefficients of the covariates (optional). |

### Author(s)

Marie-Pierre Sylvestre

marie-pierre.sylvestre@umontreal.ca

### References

Sylvestre, M. P., & Abrahamowicz, M. (2009). Flexible modeling of the cumulative effects of time-dependent exposures on the hazard. Statistics in medicine, 28(27), 3437-3453.

### Examples

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