Create a mean value feature specification

Produces a feature spec that computes the arithmetic mean of a numeric column across all records matching the concept set for each person. Commonly used for averaging repeated lab measurements (e.g. mean systolic blood pressure across visits).

Usage

omop.feature.mean_value(
  concept_set,
  value_column = "value_as_number",
  name = NULL
)

Arguments

concept_set

Numeric vector of concept IDs, or an omop_concept_set object defining the concepts to match.

value_column

Character; name of the numeric column to average (default "value_as_number").

name

Character; optional custom name for the feature column. If NULL, auto-generated from the concept and table context.

Value

An omop_feature_spec object with type = "mean_value".

See also

ds.omop.plan.features, omop.feature.min_value, omop.feature.max_value

Examples

if (FALSE) { # \dontrun{
spec <- omop.feature.mean_value(c(3004249),
  value_column = "value_as_number")
plan <- ds.omop.plan.features(plan, "vitals",
  "measurement", specs = list(mean_sbp = spec))
} # }