Extract Coefficients from Selection Models
This function extracts coefficients from sample selection models
## S3 method for class 'selection'
coef(object, part = "full", ...)
## S3 method for class 'summary.selection'
coef(object, part = "full", ...)
## S3 method for class 'coef.selection'
print( x, prefix = TRUE,
digits = max(3, getOption("digits") - 3), ... )object |
object of class |
part |
character string indicating
which parts of the coefficients to extract:
|
x |
object returned by |
prefix |
logical. Add a prefix to the names of the coefficients that indicates to which equation the coefficient belongs. |
digits |
numeric, (suggested) number of significant digits. |
... |
currently not used. |
coef.selection returns a vector of the estimated coefficients.
coef.summary.selection returns a matrix of the estimated coefficients,
their standard errors, t-values, and p-values.
Arne Henningsen, Ott Toomet (otoomet@ut.ee)
coef, selection, vcov.selection,
and selection-methods.
## Estimate a simple female wage model taking into account the labour
## force participation
data(Mroz87)
a <- heckit(lfp ~ huswage + kids5 + mtr + fatheduc + educ + city,
log(wage) ~ educ + city, data=Mroz87)
## extract all coefficients of the model:
coef( a )
## now extract the coefficients of the outcome model only:
coef( a, part="outcome")
## extract all coefficients, standard errors, t-values
## and p-values of the model:
coef( summary( a ) )
## now extract the coefficients, standard errors, t-values
## and p-values of the outcome model only:
coef( summary( a ), part="outcome")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.