Warn if survey has multiple observations per participant

Issues a warning when a survey contains multiple observations per participant (more rows than unique part_id values).

Usage

warn_multiple_observations(
  participants,
  observation_key = NULL,
  filter_hint = c("pipeline", "legacy")
)

Arguments

participants

participant data.table

observation_key

optional column name(s) identifying observations

filter_hint

character; "pipeline" for pipeline-style hint or "legacy" for contact_matrix-style hint

Value

NULL invisibly