Locate a mid-level cluster grouping column — find_cluster

Matches cluster/therapist/teacher/classroom/ group (case-insensitive). Used for a grouping level above case but below study/institution. Observer, rater, and assessor columns record interobserver agreement rather than a design level, so they never match.

Usage

find_cluster_var(data)

Arguments

data: Data frame.

Value

Column name, or NULL if no match.

Examples

find_cluster_var(data.frame(teacher = c("T1", "T2"), outcome = c(1, 2)))
#> [1] "teacher"