Create binary covariate
bin_var.RdCreate an object of class SimVarBin to hold proportions of binary
variables specified in a simulation study.
Usage
bin_var(
prob_internal,
prob_external,
mu_internal_before_bin = 0,
mu_external_before_bin = 0
)Arguments
- prob_internal
numeric. Proportion for the internal arms.
- prob_external
numeric. Proportion for the external arm.
- mu_internal_before_bin
numeric. Mean value of the covariate before binarization for the internal arms. The default is 0. See
detailsfor more information.- mu_external_before_bin
numeric. Mean value of the covariate before binarization for the external arm. The default is 0. See
detailsfor more information.
Details
This function contains information necessary to create binary covariates
as part of a simulation study. The binary covariates are created
by binarizing multivariate normal distributions to achieve
the probabilities specified in prob_internal and prob_external. The
user may choose to change the default mean value of each variable
prior to binarization by specifying mu_internal_before_bin or
mu_external_before_bin to ensure the correct scales are used in the
covariance matrix, though the ultimate proportions will depend on
prob_internal and prob_external. The default values for
mu_internal_before_bin and mu_external_before_bin are 0, and
it is not recommended to change these without good reason.
See also
Other simvar:
cont_var()