summary.HeckmanCL {ssmodels} | R Documentation |
Summary of Classic Heckman Model
Description
Prints a detailed summary of the parameter estimates and model fit
statistics for an object of class HeckmanCL
.
Usage
## S3 method for class 'HeckmanCL'
summary(object, ...)
Arguments
object |
An object of class |
... |
Additional arguments (currently unused). |
Details
This method displays the maximum likelihood estimation results for the classical Heckman sample selection model. It includes separate coefficient tables for:
Selection equation (Probit model),
Outcome equation,
Error terms (
sigma
andrho
).
Additionally, it reports the model fit statistics (log-likelihood, AIC, BIC, and number of observations).
Value
Prints to the console:
Model fit statistics (log-likelihood, AIC, BIC, number of observations).
Coefficient tables with standard errors and significance stars.
Invisibly returns NULL
.
See Also
Examples
## Not run:
data(MEPS2001)
attach(MEPS2001)
selectEq <- dambexp ~ age + female + educ + blhisp + totchr + ins + income
outcomeEq <- lnambx ~ age + female + educ + blhisp + totchr + ins
model <- HeckmanCL(selectEq, outcomeEq, data = MEPS2001)
summary(model)
## End(Not run)