Description Usage Arguments Details Value References See Also

Summary method for objects of class `sbchoice`

.

1 2 3 4 5 |

`object` |
an object of class |

`x` |
an object of class |

`digits` |
a number of digits to display. |

`...` |
optional arguments. Currently not in use. |

The function `summary.sbchoice()`

computes and returns a list of summary
statistics of the fitted model in `object`

of the `"sbchoice"`

class.

Some of the values are printed up to certain decimal places. Actual values of
individual components are displayed separately, for instance, by `summary(object)$coefficients`

.
See the **Value** section for a list of components.

Since the model for the single-bounded dichotomous choice CV data is estimated by `glm`

,
an object of class

`"summary.sbchoice"`

is constructed based on a `"summary.glm"`

class object. The summary of the `"summary.glm"`

class object is available by
`summary(object)$glm.summary`

. Other components computed by
`summary.glm`

are also accessible. See `summary.glm`

for details.

In addition to those available in the `object`

of the `"sbchoice"`

class,
the following list components are added.

`glm.summary` |
a summary of the |

`glm.null.summary` |
a summary of the |

`loglik` |
the value of the log-likelihood of the model. |

`loglik.null` |
the value of the log-likelihood of the null model. |

`psdR2` |
McFadden's pseudo-R2 measure. |

`adjpsdR2` |
McFadden's pseudo-R2 measure adjusted for the degrees of freedom. |

`medianWTP` |
the estimated median WTP. |

`meanWTP` |
the estimated mean WTP. |

`trunc.meanWTP` |
the estimated mean WTP truncated at the maximum bid. |

`adj.trunc.meanWTP` |
the truncated mean WTP with the adjustment of
Boyle |

`LR.test` |
a vector containing the likelihood ratio test statistic, the degrees of freedom and the associated p-value. |

`AIC` |
information criterion (AIC and BIC). |

Boyle KJ, Welsh MP, Bishop RC (1988).
“Validation of Empirical Measures of Welfare Change: Comment.”
*Land Economics*, **64**(1), 94–98.

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