@type t() :: %Statwise.TestResult{
  alternative: atom() | nil,
  confidence_interval: map() | nil,
  df: number() | :nan | nil,
  effect_size: map() | nil,
  estimate: map() | nil,
  metadata: map() | nil,
  method: atom() | nil,
  n: map() | nil,
  p_value: number() | :nan,
  reference: map() | nil,
  statistic: number() | :nan | :infinity | :neg_infinity,
  test: atom()
}