README.md

In PNADCperiods: Identify Reference Periods in Brazil's PNADC Survey Data

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

• Getting Started
• SIDRA Mensalization
• How It Works
• Applied Examples
• Full Reference

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

PNADCperiods documentation built on April 28, 2026, 9:07 a.m.