| hybrid | Hybrid model with structural shift (permits covariate-specific treatment effects) |
| print.hybrid | Hybrid model with structural shift (permits covariate-specific treatment effects) |
| print.sampselect | Sample selection model (endogenous probit). |
| sampselect | Sample selection model (endogenous probit). |
| summary.hybrid | Hybrid model with structural shift (permits covariate-specific treatment effects) |
| summary.sampselect | Sample selection model (endogenous probit). |