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Pairwise ARD

Source: R/ard_pairwise.R
ard_pairwise.Rd

Utility to perform pairwise comparisons.

Usage 

ard_pairwise(data, variable, .f, include = NULL)

Arguments

data

(data.frame)
a data frame

variable

(tidy-select)
Column to perform pairwise analyses for.

.f

(function)
a function that creates ARDs. The function accepts a single argument and a subset of data will be passed including the two levels of variable for the pairwise analysis.

include

(vector)
a vector of levels of the variable column to include in comparisons. Pairwise comparisons will only be performed for pairs that have a level specified here. Default is NULL and all pairwise computations are included.

Value

list of ARDs

Examples 

ard_pairwise(
  ADSL,
  variable = ARM,
  .f = \(df) {
    ard_complex(
      df,
      variables = AGE,
      statistic = ~ list(ttest = \(x, data, ...) t.test(x ~ data$ARM)[c("statistic", "p.value")])
    )
  },
  include = "Placebo" # only include comparisons to the "Placebo" group
)
#> $`'Placebo' vs. 'Xanomeline High Dose'`
#> {cards} data frame: 2 x 8
#>   variable context stat_name stat_label  stat fmt_fn
#> 1      AGE complex statistic  statistic 0.655      1
#> 2      AGE complex   p.value    p.value 0.513      1
#> ℹ 2 more variables: warning, error
#> 
#> $`'Placebo' vs. 'Xanomeline Low Dose'`
#> {cards} data frame: 2 x 8
#>   variable context stat_name stat_label   stat fmt_fn
#> 1      AGE complex statistic  statistic -0.353      1
#> 2      AGE complex   p.value    p.value  0.724      1
#> ℹ 2 more variables: warning, error
#>