coef.lookup: Coefficient lookup.
In sumitrahman/perfman: Probability Estimates From Ordered Logistic Regression

Description Usage Arguments Details Value Examples

This utility function is used by other functions to lookup coefficients that have been estimated by fit.model. The estimates are found in the polr class object fit. Baseline categories return a value of zero.

1 2	## S3 method for class 'lookup' coef(variable, value)

`variable`	A column name from the original data frame. This will be the variable one of whose values you are looking up the coefficient for.
`value`	A specific value of the variable under consideration. This value must be one of the values actually used in the data frame for `fit.model`.

The function checks that the variable is in the fitted model, and that the value for that variable is one that has been included in the model.

A numeric value, zero for a baseline category or the estimated coefficient from the fitted logistic model. These estimates are logarithms of the cumulative logit (once you add the relevent cut).