Count Unique Subjects per Diagnosis — count_unique_subjects_per

This function counts the number of unique subjects for each diagnosis in a dataframe. If format_counts is TRUE, it returns a formatted string of counts.

count_unique_subjects_per_diagnosis(
  df,
  diagnosis_col,
  subject_col,
  format_counts = FALSE
)

Arguments

df: A dataframe containing the data.
diagnosis_col: A string specifying the column name for diagnoses.
subject_col: A string specifying the column name for subjects.
format_counts: A boolean indicating whether to format counts as a single string in the format "x/y/z/q" where x, y, z, q represent the counts for each diagnosis. Defaults to FALSE.

Value

A dataframe with two columns: Diagnosis and Unique_Subjects. If format_counts is TRUE, only the formatted counts are returned.

Examples

if (FALSE) { # \dontrun{
df <- data.frame(
  diagnosis = c('A', 'A', 'B', 'A', 'B', 'C', 'C', 'C'),
  subject_id = c(1, 2, 2, 3, 4, 5, 6, 6)
)
count_unique_subjects_per_diagnosis(df, 'diagnosis', 'subject_id')
count_unique_subjects_per_diagnosis(df, 'diagnosis', 'subject_id', format_counts = TRUE)
} # }