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surveycore 0.6.0

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@JDenn0514 JDenn0514 released this 19 Mar 00:22
· 161 commits to main since this release
v0.6.0
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Learn about vigilant mode.

Breaking changes

  • survey_srs class and as_survey_srs() constructor have been removed. SRS
    designs are now created via as_survey() with no ids or strata — this
    produces a survey_taylor with no cluster/strata structure. All estimates are
    numerically identical.

New features

  • get_diffs() estimates treatment effects (differences from a reference group)
    via survey-weighted regression. Supports bivariate and multivariate models,
    Gaussian and non-Gaussian families, and optional subgroup analysis. Two
    estimation paths: direct coefficients for simple models, and
    marginaleffects::avg_slopes() / avg_predictions() for models with
    covariates or non-Gaussian AMEs. Returns a survey_diffs tibble with optional
    mean, pct_change, n_weighted columns, significance stars, and p-value
    adjustment. marginaleffects moved from Suggests to Imports.

  • as_survey() now supports multi-column FPC for multi-stage designs
    (e.g., fpc = c(fpc_stage1, fpc_stage2)). Each FPC column corresponds to one
    ID stage. Per-stage FPC is validated for NAs, non-positive values, and
    within-cluster constancy.

  • print() for survey_taylor now displays per-stage FPC bullets for
    multi-stage designs (e.g., FPC (stage 1): fpc, FPC (stage 2): fpc2).

Bug fixes

  • SRS variance estimation now uses Taylor (HT) linearization via
    .build_cluster_matrices(), correct for any weight structure. Previously used
    unweighted sample variance which was incorrect for non-proportional weights.

  • survey_glm() now correctly indexes weights when na.action = na.omit drops
    non-contiguous rows.

  • get_freqs() now routes survey_nonprob designs through the
    Horvitz-Thompson variance path, consistent with the other five analysis
    functions.

  • as_survey_twophase() now accepts survey_replicate and SRS
    survey_taylor objects as the phase-1 design (previously restricted to
    stratified/clustered survey_taylor only).

  • as_survey() SRS fallback downgraded from warning to message.

Internal infrastructure

  • .build_cluster_matrices() extracts multi-stage cluster, strata, and FPC
    matrix construction into a shared helper, used across the Taylor variance
    engine, analysis cell estimators, and GLM sandwich variance.
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