model.frame.selection {sampleSelection} | R Documentation |
Return the variables used for estimating a sample selection model
## S3 method for class 'selection' model.frame(formula, ... )
formula |
object of class |
... |
further arguments passed to other methods
(e.g. |
A data.frame containing all variables used for the estimation.
Arne Henningsen
selection
,
model.frame
, and model.frame.binaryChoice