Create an event table
create_event_table( regimen, t_max = NULL, t_obs = NULL, t_tte = NULL, t_init = 0, p, covariates, model = NULL, obs_type = NULL )
regimen
: regiment_max
: t_maxt_obs
: t_obst_tte
: t_ttet_init
: t_initp
: parameterscovariates
: covariatesmodel
: modelobs_type
: observation type