Capture variables to describe
Examples
describe(simtab(epitabl), age, sex)
#> <simtab_spec>
#> not yet computed
#> data: 1500 rows x 22 columns; hash c0787c425db7
#> describe: age, sex
#> stratify/by: <unset>
#> adjust: <unset>
#> summary: auto
#> measure: <unset> (ref: <unset>, conf.level: 0.95)
#> test: <unset>
#> design: <unset>
#> style: default