Re: [R] Interpreting coefficient in selection and outcome Heckman models in sampleSelection

> Best, > Ott > > > Hi Mark! > > > > On Sun, Jan 3, 2010 at 9:08 PM, Mark Bulling > > wrote: > >> Hi there > >> > >> Within sampleSelection, I'm trying to calculate the marginal effects for > >> variables that are present

[R] Interpreting coefficient in selection and outcome Heckman models in sampleSelection

Hi there Within sampleSelection, I'm trying to calculate the marginal effects for variables that are present in both the selection and outcome models. For example, age might have a positive effect on probability of selection, but then a negative effect on the outcome variable. i.e. Model<-selecti