Starting Points for SIDRA Series Mensalization

Pre-computed starting point values (y0) for mensalizing IBGE's rolling quarterly series into exact monthly estimates.

Usage

data(pnadc_series_starting_points)

Format

A data.table with 159 rows and 3 columns:

series_name

Character. Name of the SIDRA series (53 series)

mesnotrim

Integer. Month position in quarter (1, 2, or 3)

y0

Numeric. Starting point value for this series and position

Source

Computed using data-raw/regenerate_starting_points_from_microdata.R

Details

These starting points were computed from PNADC microdata using the full R package pipeline, ensuring consistency with compute_starting_points_from_microdata:

1. Weight calibration via pnadc_apply_periods: all months scaled to SIDRA monthly population totals

2. z_ aggregates computed via compute_z_aggregates using calibrated weight_monthly

3. Starting points computed via compute_series_starting_points with CNPJ-aware calibration periods

The calibration period (2013-2019) was chosen because:

• It includes stable pre-pandemic data

• IBGE methodology was consistent during this period

• Sufficient observations for reliable estimates

CNPJ series (empregadorcomcnpj, empregadorsemcnpj, contapropriacomcnpj, contapropriasemcnpj) use calibration period 2016-2019 with cumulative sum starting from October 2015 due to V4019 variable availability.

Methodology Consistency

The bundled starting points are generated using the same pipeline as compute_starting_points_from_microdata, ensuring that users who compute custom starting points will get consistent results.

When to Use Custom Starting Points

The bundled starting points are suitable for most users. Consider computing custom starting points with compute_starting_points_from_microdata if:

• IBGE makes major methodological changes to the PNADC

• You need series not included in the bundled data

• You want to use a different calibration period

• You are working with updated or different microdata

See also

mensalize_sidra_series which uses this data by default compute_series_starting_points for custom calibration

Examples

if (FALSE) { # \dontrun{
# View bundled starting points
data(pnadc_series_starting_points)
head(pnadc_series_starting_points)

# See which series are available
unique(pnadc_series_starting_points$series_name)
} # }