Welch's t test — welch_t

Custom and stripped-down version of R's built-in t.test that yields the estimate with the confidence interval corresponding to the specified alpha level.

Usage

welch_t_test(
  vals,
  grps,
  arms = unique(grps),
  na_replacement = NULL,
  alpha = 0.05
)

Arguments

vals: numeric vector
grps: character vector, allowed values are "ctrl" and "actv" and used to slice x into two vectors with values to be compared.
arms: character vector with the arms used in the grps parameter. The first value will be used as the comparator.
na_replacement: scalar (or NULL), if NULL missing values will be removed. Otherwise, missing values will be replaced by the value of na_replacement
alpha: numeric, 1.0 - confidence_level

Value

A four-element vector with point estimate, p value and confidence internal