ard_missing  R Documentation 
Compute Analysis Results Data (ARD) for statistics related to data missingness.
ard_missing(
data,
variables,
by = dplyr::group_vars(data),
statistic = everything() ~ missing_summary_fns(),
fmt_fn = NULL,
stat_label = everything() ~ default_stat_labels()
)
data 
( 
variables 
( 
by 
( 
statistic 
( The value assigned to each variable must also be a named list, where the names
are used to reference a function and the element is the function object.
Typically, this function will return a scalar statistic, but a function that
returns a named list of results is also acceptable, e.g.

fmt_fn 
( 
stat_label 
( 
an ARD data frame of class 'card'
ard_missing(ADSL, by = "ARM", variables = "AGE")
ADSL >
dplyr::group_by(ARM) >
ard_missing(
variables = "AGE",
statistic = ~ missing_summary_fns("N_miss")
)
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