Stratified Parametric Models

Usage

stratifiedparametric(
  data,
  elapsedtime,
  outcome,
  strata_variable,
  covariates,
  outcomeLevel = "1",
  parametric_distribution = "weibull",
  baseline_specification = "separate_baselines",
  spline_df = 3,
  knot_placement = "quantiles",
  test_stratification = TRUE,
  confidence_level = 0.95,
  show_model_summary = TRUE,
  show_coefficients = TRUE,
  show_stratification_test = TRUE,
  show_survival_curves = TRUE,
  show_hazard_curves = TRUE,
  show_comparison_plot = FALSE,
  show_diagnostics = TRUE,
  showSummaries = FALSE,
  showExplanations = FALSE
)

Arguments

data: The data as a data frame.
elapsedtime: Time variable for survival analysis.
outcome: Event indicator variable.
strata_variable: Variable for stratifying the parametric models.
covariates: Covariates to include in the stratified parametric model.
outcomeLevel: Level of outcome variable indicating event.
parametric_distribution: Parametric distribution for stratified modeling.
baseline_specification: Method for specifying baseline functions across strata.
spline_df: Degrees of freedom for spline-based baseline functions.
knot_placement: Method for placing spline knots.
test_stratification: Test whether stratification significantly improves model fit.
confidence_level: Confidence level for parameter estimates and predictions.
show_model_summary: Display comprehensive model summary information.
show_coefficients: Display parameter estimates for each stratum.
show_stratification_test: Display test results for stratification effect.
show_survival_curves: Display stratified survival curves.
show_hazard_curves: Display stratified hazard functions.
show_comparison_plot: Compare stratified vs non-stratified models.
show_diagnostics: Display diagnostic plots and statistics for each stratum.
showSummaries: Generate natural language summaries of results.
showExplanations: Show detailed methodology explanations.

Value

A results object containing:

`results$todo`					a html
`results$modelSummary`					a html
`results$coefficientsTable`					a table
`results$stratificationTestTable`					a table
`results$modelComparisonTable`					a table
`results$strataCharacteristicsTable`					a table
`results$survivalPlot`					an image
`results$hazardPlot`					an image
`results$comparisonPlot`					an image
`results$diagnosticPlots`					an image
`results$residualAnalysisTable`					a table
`results$predictionTable`					a table
`results$analysisSummary`					a html
`results$methodExplanation`					a html

Tables can be converted to data frames with asDF or as.data.frame. For example:

results$coefficientsTable$asDF

as.data.frame(results$coefficientsTable)