sampleSelection: model.frame.selection – R documentation

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model.frame.selection

Data of Selection Models

Return the variables used for estimating a sample selection model

## S3 method for class 'selection'
model.frame(formula, ... )

`formula`	object of class `selection`.
`...`	further arguments passed to other methods (e.g. `model.frame` or `model.frame.binaryChoice`).

A data.frame containing all variables used for the estimation. The “terms” attribute contains the terms for the selection equation.

Arne Henningsen