Compute Analysis Results Data (ARD) from a specification

Walks each analysis in an ardflow_spec and computes a CDISC Analysis Results Data (ARD) object using the cards engine. Continuous analyses use cards::ard_continuous(); categorical analyses use cards::ard_categorical(). Each result is stamped with traceability metadata (input rows, variables, by variables and a timestamp).

compute_ard(spec, data = NULL)

Arguments

spec

An ardflow_spec object.

data

Optional named list of data frames keyed by dataset name (e.g. list(adsl = adsl, adae = adae)). If NULL, datasets are resolved by name from the pharmaverseadam package, enabling fully reproducible runs with no private data.

Value

An object of class ardflow_ard: a named list (one entry per analysis id) of cards/tibble ARDs, each carrying an ardflow_trace attribute.

Examples

spec_path <- system.file("specs", "demographics.yaml", package = "ardflow")
if (nzchar(spec_path) && requireNamespace("pharmaverseadam", quietly = TRUE)) {
  compute_ard(read_spec(spec_path))
}
#> 
#> ── ardflow ARD set ─────────────────────────────────────────────────────────────
#> ℹ 3 analysis result(s) computed
#> ✔ [t_age] Table 14-1.1  Summary of Age (Years) by Treatment Arm  -  32 ARD rows from 306 input rows
#> ✔ [t_sex] Table 14-1.2  Sex Distribution by Treatment Arm  -  24 ARD rows from 306 input rows
#> ✔ [t_ae_soc] Table 14-3.1  Adverse Events by System Organ Class  -  207 ARD rows from 1191 input rows