Stata 15 help for _check_omit

Title

[P] _check_omit -- Programmer's utility for checking collinearity behavior

Syntax

_check_omit matname, get

_check_omit matname, check result(name)

Description

_check_omit, get generates a matrix named matname containing zeros and ones, with one for omitted predictors and zero otherwise. This is done by looking at the current e(b) and e(V) matrices and determining the omit status.

_check_omit, check result(name) compares the current omit status of the e(b) and e(V) matrices with matname and returns a local macro, name, containing zero if the omit status is the same and one otherwise.


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