CoxComparison

Comparison family for time-to-event outcomes (family key "cox"). It supports the incremental, heterogeneity and contrast types. Incremental and heterogeneity compare nested coxph fits with a likelihood-ratio test. Contrast takes pairwise Wald contrasts of the predictor effect across groups.by levels. Requires exactly one time column.

PolyGenius::ComparisonFamily -> CoxComparison

Public methods

• CoxComparison$new()
• CoxComparison$validate.context()
• CoxComparison$prepare.data()
• CoxComparison$clone()

Method new()

Create the family (key set by the class).

Usage

CoxComparison$new()

Method validate.context()

Check the resolved frame supports the requested comparison.

Usage

CoxComparison$validate.context(frame, cell, fit.specs, type)

Arguments

frame — data.table resolved from the study.

cell — Fit-cell list.

fit.specs — Extra fitting options.

type — Comparison type.

Returns

TRUE, invisibly, or an abort.

Method prepare.data()

Build the complete-case data and role names for fitting.

Usage

CoxComparison$prepare.data(frame, cell, fit.specs)

Arguments

frame — data.table resolved from the study.

cell — Fit-cell list.

fit.specs — Extra fitting options.

Returns

A list of fit inputs.

Method clone()

The objects of this class are cloneable with this method.

Usage

CoxComparison$clone(deep = FALSE)

Arguments

deep — Whether to make a deep clone.

ComparisonFamily, associate$compare, CoxRegression

Other comparison-families: ComparisonFamily, CompetingRiskComparison, LinearComparison, LogisticComparison