LinearComparison

Comparison family for continuous outcomes (family key "lm"). It supports the incremental, heterogeneity and contrast types. Incremental and heterogeneity compare nested lm fits with an F-test (anova), reporting the change in R-squared for incremental. Contrast takes pairwise Wald contrasts of the predictor effect across groups.by levels.

PolyGenius::ComparisonFamily -> LinearComparison

Public methods

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

Method new()

Create the family (key set by the class).

Usage

LinearComparison$new()

Method validate.context()

Check the resolved frame supports the requested comparison.

Usage

LinearComparison$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

LinearComparison$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

LinearComparison$clone(deep = FALSE)

Arguments

deep — Whether to make a deep clone.

ComparisonFamily, associate$compare, LinearRegression

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