All functions

HCinitial()

Two-Step Method for Parameter Estimation of the Heckman Model

HeckmanBS()

Heckman BS Model fit Function

HeckmanCL()

Classic Heckman Model fit Function

HeckmanGe()

Function for fit of the Generalized Heckman Model

HeckmanSK()

Normal Skew Model fit Function

HeckmantS()

Heckman-t Model fit Function

IMR()

Inverse Mills Ratio

MEPS2001

Medical Expenditure Panel Survey

Mroz87

U.S. Women's Labor Force Participation

nhanes

US National Health and Nutrition Examination Study

PSID2

Panel Study of Income Dynamics

RandHIE

RAND Health Insurance Experiment

ssmodels

ssmodels: A package for fit the sample selection models.

step2()

Heckman's two-step method

summary(<HeckmanBS>)

Summary of Birnbaum-Saunders Heckman Model

summary(<HeckmanCL>)

Summary of Classic Heckman Model

summary(<HeckmanGe>)

Summary of Generalized Heckman Model

summary(<HeckmanSK>)

Summary of Skew-Normal Heckman Model

summary(<HeckmantS>)

Summary of Heckman-ts Model

twostep()

Heckman's two-step method