process_na_yz

Identifies rows with missing values in `y` (and `zcol` if supplied),
applies the chosen `na.action` strategy, and returns the complete-case
subsets of the outcome vector, covariate matrix, and pseudo-weight vector.
Also standardizes the domain variable via `standardize_zcol()`.

internal

Provides pseudo-weighted estimates of means and
prevalences for finite population inference from nonprobability
samples using auxiliary information from one or multiple probability
reference surveys. The package supports estimation with multiple
reference surveys, allowing auxiliary information to be combined
when no single survey contains all variables relevant to
participation. Optional cumulative precalibration can be applied to
align weighted totals of shared variables across surveys. Methods
are based on the generalized estimating equations framework of
Landsman et al. (2026) <doi:10.1002/sim.70403> for correcting
participation bias. For a single reference survey, the package
implements the raking ratio calibration method and includes the
adjusted logistic propensity (ALP) method of Wang, Valliant, and Li
(2021) <doi:10.1002/sim.9122>, as well as the Chen-Li-Wu (CLW)
method of Chen, Li, and Wu (2020) <doi:10.1080/01621459.2019.1677241>.
Analytic variance estimation uses Taylor linearization and accounts
for complex sampling designs in the reference surveys via integration
with the 'survey' package.

Jiakun Lin

nonprobsampling

Inference for Nonprobability Samples Using Multiple Reference
Surveys

Victoria Landsman

Aya A. Mitani

process_na_yz function

<dl><dt>sc_data</dt>
<dd>A list returned by `prepare_sc_data()`, with components
`sc`, `X`, `w`, and `idx_keep`.</dd>
<dt>y</dt>
<dd>Single character string naming the outcome variable in `sc_data$sc`.</dd>
<dt>zcol</dt>
<dd>Single character string naming the domain variable in
`sc_data$sc`, or NULL for the overall mean.</dd>
<dt>na.action</dt>
<dd>NA-handling function; one of `stats::na.omit` (default),
`stats::na.exclude`, or `stats::na.fail`. `na.pass` is not supported.</dd></dl>

Arguments

Handle missing values in the outcome and domain variables — process_na_yz

<dl>

<dt>sc_data</dt>
<dd>A list returned by `prepare_sc_data()`, with components
`sc`, `X`, `w`, and `idx_keep`.</dd>


<dt>y</dt>
<dd>Single character string naming the outcome variable in `sc_data$sc`.</dd>


<dt>zcol</dt>
<dd>Single character string naming the domain variable in
`sc_data$sc`, or NULL for the overall mean.</dd>


<dt>na.action</dt>
<dd>NA-handling function; one of `stats::na.omit` (default),
`stats::na.exclude`, or `stats::na.fail`. `na.pass` is not supported.</dd>

</dl>

process_na_yz: Handle missing values in the outcome and domain variables

Description

Usage

Value

Arguments