Variables from the CPPVAR summary file, with types, value codes, and topical sections. Used by cppvar_all_columns.csv.

VariableLabelTypeSectionDescription

All 4,862 variables in the unified wide dataset (cpp_unified_wide), drawn from CPPVAR, CPPMASTER cards, and standalone datasets. Includes coverage and summary statistics.

VariableLabelSourceN% MissingMeanSD

2,534 sparse variables (<1% coverage) from the unified dataset, stored separately in cpp_unified_supplementary.csv. These can be merged back into the main dataset by case_id. Includes high-sequence pregnancy cards, 3rd/4th pregnancy forms, rare clinical variables, and duplicate codebook entries.

VariableLabelSourceNCoverageReason