Interprets a Poisson joint formula and makes necessary changes to data

get_form_joint uses two event formula, a shared formula, and data.table, to fully describe the model for a joint Poisson model.

Usage

get_form_joint(formula_list, df)

Arguments

formula_list

a list of formula objects, each written in Colossus notation. See the Unified Equation Representation vignette for details. Each formula should include the elements specific to the specified event column. The list can include an entry named "shared" to denote shared terms. The person-year and strata columns should be the same.

df

a data.table containing the columns of interest

Value

returns a class fully describing the model and the updated data

See also

Other Formula Interpretation: ColossusCaseConStrataSurv(), ColossusCaseConSurv(), ColossusCaseConTimeStrataSurv(), ColossusCaseConTimeSurv(), ColossusCoxStrataSurv(), ColossusCoxSurv(), ColossusExpressionCall(), ColossusFineGrayStrataSurv(), ColossusFineGraySurv(), ColossusPoisSurv(), get_form(), get_form_list(), get_form_risk(), get_form_surv()