get_cumu_coef | R Documentation |
These functions are designed to extract (or mimic) the cumulative coefficients
usually used in additive hazards models (Aalen model) to depict (time-varying)
covariate effects. For PAMMs, these are the differences
between the cumulative hazard rates where all covariates except one have the
identical values. For a numeric covariate of interest, this calculates
\Lambda(t|x+1) - \Lambda(t|x)
. For non-numeric covariates
the cumulative hazard of the reference level is subtracted from
the cumulative hazards evaluated at all non reference levels. Standard
errors are calculated using the delta method.
get_cumu_coef(model, data = NULL, terms, ...)
## S3 method for class 'gam'
get_cumu_coef(model, data, terms, ...)
## S3 method for class 'aalen'
get_cumu_coef(model, data = NULL, terms, ci = TRUE, ...)
## S3 method for class 'cox.aalen'
get_cumu_coef(model, data = NULL, terms, ci = TRUE, ...)
model |
Object from which to extract cumulative coefficients. |
data |
Additional data if necessary. |
terms |
A character vector of variables for which the cumulative coefficient should be calculated. |
... |
Further arguments passed to methods. |
ci |
Logical. Indicates if confidence intervals should be returned as well. |
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