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PNADCperiods

Convert Brazil’s quarterly PNADC survey data into sub-quarterly time series (monthly, fortnightly, weekly) and mensalize IBGE SIDRA aggregate series.

Installation 

devtools::install_github("antrologos/PNADCperiods")

Main Features

  • Microdata mensalization: Identify reference months, fortnights, and weeks in PNADC microdata
  • SIDRA mensalization: Convert 86+ rolling quarterly IBGE series to exact monthly values
  • Weight calibration: Hierarchical raking to IBGE population totals
  • ~97% monthly determination with full data stacking; experimental strategies improve fortnight/week rates further

Basic Usage

Microdata Mensalization 

library(PNADCperiods)

# Build crosswalk identifying reference periods
crosswalk <- pnadc_identify_periods(pnadc_stacked)

# Apply to data with weight calibration
result <- pnadc_apply_periods(pnadc, crosswalk, weight_var = "V1028", anchor = "quarter")

SIDRA Series Mensalization 

# Fetch rolling quarterly data from SIDRA
rolling <- fetch_sidra_rolling_quarters(theme = "labor_market")

# Convert to exact monthly series
monthly <- mensalize_sidra_series(rolling)

Key Functions

Microdata

Function Description
pnadc_identify_periods() Build crosswalk: identify months/fortnights/weeks
pnadc_apply_periods() Apply crosswalk + calibrate weights
pnadc_experimental_periods() Boost rates with probabilistic strategies
validate_pnadc() Validate input columns

SIDRA Series

Function Description
get_sidra_series_metadata() List 86+ available PNADC series
fetch_sidra_rolling_quarters() Download rolling quarter data from SIDRA
mensalize_sidra_series() Convert rolling quarters to exact monthly
fetch_monthly_population() Fetch population totals from SIDRA

Documentation

Authors

  • Rogerio J. Barbosa (Ceres-IESP/UERJ) – R package, dashboard, and website
  • Marcos Hecksher (Ipea) – Mensalization methodology

Credits

Original PNADC data is collected by the Brazilian Institute of Geography and Statistics (IBGE). The mensalization methodology was developed by Marcos Hecksher (Ipea) — see Hecksher (2020, IPEA Nota Tecnica Disoc n. 62 and n. 87; Carta de Conjuntura v. 47). The R package, interactive dashboard, and documentation website were developed by Rogerio J. Barbosa at the Center for the Study of Wealth and Social Stratification (Ceres - IESP/UERJ).

Citation:

Barbosa, Rogerio J; Hecksher, Marcos. (2026). PNADCperiods: Identify Reference Periods in Brazil’s PNADC Survey Data. R package version v0.1.0. https://github.com/antrologos/PNADCperiods

citation("PNADCperiods")

Getting Help

License

MIT