Package: PNADCperiods
Title: Identify Reference Periods in Brazil's PNADC Survey Data
Version: 0.1.1
Authors@R: c(
    person("Rogerio", "Barbosa", email = "rogerio.barbosa@iesp.uerj.br", role = c("aut", "cre"),
           comment = c(ORCID = "0000-0002-6796-4547",
                       contribution = "R package, dashboard, and website")),
    person("Marcos", "Hecksher", email = "mdhecksher@gmail.com", role = c("aut"),
           comment = c(ORCID = "0000-0003-2992-1252",
                       contribution = "Mensalization methodology"))
    )
Description: Identifies reference periods (months, fortnights, and weeks) in
    Brazil's quarterly PNADC (Pesquisa Nacional por Amostra de Domicilios
    Continua) survey data and computes calibrated weights for sub-quarterly
    analysis. The core algorithm uses IBGE (Instituto Brasileiro de Geografia
    e Estatistica) 'Parada Tecnica' (technical break) rules combined with
    respondent birthdates to determine which temporal period each survey
    observation refers to. Period identification follows a nested hierarchy
    enforced by construction: fortnights require months, weeks require
    fortnights. Achieves approximately 97% monthly determination rate with
    the full series (2012-2025). Strict fortnight and week rates are
    approximately 9% and 3% respectively, as they cannot leverage
    cross-quarter panel aggregation. Experimental strategies (probabilistic
    assignment and UPA (Primary Sampling Unit) aggregation) further improve
    these determination rates. The package provides adaptive hierarchical
    weight calibration (4/2/1 cell levels for month/fortnight/week) with
    period-specific smoothing to produce survey weights calibrated to
    SIDRA (Sistema IBGE de Recuperacao Automatica) population totals. Also
    includes a SIDRA mensalization module that converts 86+ official rolling
    quarter series from the IBGE SIDRA API (Application Programming
    Interface) into exact monthly estimates, without requiring access to
    microdata. Hecksher (2020)
    <https://repositorio.ipea.gov.br/handle/11058/9859>.
License: MIT + file LICENSE
Language: en-US
Encoding: UTF-8
LazyData: true
RoxygenNote: 7.3.2
Depends: R (>= 4.1.0)
Imports: data.table (>= 1.14.0), checkmate (>= 2.0.0), sidrar (>=
        0.2.9), lubridate (>= 1.9.4)
Suggests: dplyr, fst, haven, testthat (>= 3.0.0), knitr, rmarkdown,
        pkgdown, ggplot2, scales
Config/testthat/edition: 3
VignetteBuilder: knitr
URL: https://antrologos.github.io/PNADCperiods/,
        https://github.com/antrologos/PNADCperiods
BugReports: https://github.com/antrologos/PNADCperiods/issues
NeedsCompilation: no
Packaged: 2026-04-15 18:54:35 UTC; antro
Author: Rogerio Barbosa [aut, cre] (ORCID:
    <https://orcid.org/0000-0002-6796-4547>, contribution: R package,
    dashboard, and website),
  Marcos Hecksher [aut] (ORCID: <https://orcid.org/0000-0003-2992-1252>,
    contribution: Mensalization methodology)
Maintainer: Rogerio Barbosa <rogerio.barbosa@iesp.uerj.br>
Repository: CRAN
Date/Publication: 2026-04-21 18:42:40 UTC
Built: R 4.6.0; ; 2026-04-25 19:24:10 UTC; unix
