Computes the deviance and Pearson chi-squared statistics for the fit from a `blm`

or `lexpit`

model. These tests are appropriate when all predictors are categorical and there are many replicates within each covariate class.

Returns a list with `table`

, with expected `E`

and observed `O`

, and the chi-square test `chisq`

and p-value (`p.value`

) for the Pearson goodness-of-fit test. The observed and expected count are listed in the order of the unique levels formed by the design matrix.

When sample weights are present, the goodness-of-fit test is a modified F-test as suggested by Archer et al. (2007).

gof(object)

- object
instance of

`blm`

or`lexpit`

Stephanie Kovalchik s.a.kovalchik@gmail.com

Archer KJ, Lemeshow S, Hosmer DW. Goodness-of-fit tests for logistic regression models when data are collected using a complex sampling design. *Computational Statistics & Data Analysis*. 2007;51:4450–4464.

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