Extract the variance covariance matrix of the beta from a Cox model
Extract the variance covariance matrix of the beta from a Cox model
coxVarCov(object) ## S3 method for class 'cph' coxVarCov(object) ## S3 method for class 'coxph' coxVarCov(object) ## S3 method for class 'phreg' coxVarCov(object)
object |
The fitted Cox regression model object either
obtained with |
Should return NULL if the Cox model has no covariate.
The rows and columns of the variance covariance matrix must be named with the names used in the design matrix.
Brice Ozenne broz@sund.ku.dk
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