PNADCperiods

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

Installation

Install the released version from CRAN:

install.packages("PNADCperiods")

Or the development version from GitHub:

# install.packages("remotes")
remotes::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

Interactive Dashboard

Explore 86+ official PNADC series with an interactive dashboard – no R required:

https://antrologos.shinyapps.io/PNADCperiods-dashboard/

The dashboard is built on top of this package and lets you visualize mensalized series, compare strategies, and download monthly time-series as CSV.

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 0.1.1. https://CRAN.R-project.org/package=PNADCperiods

citation("PNADCperiods")

Getting Help

GitHub Issues for bug reports and questions

License

MIT