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st: Ordinal independent variables in probit regression

From   Nyasha Tirivayi <[email protected]>
To   [email protected]
Subject   st: Ordinal independent variables in probit regression
Date   Thu, 10 Apr 2014 01:14:01 +0200


How best can I use a likert scale/ordered predictor in a probit
regression? The variable has five response categories from Strongly
disagree to Agree (neutral is the third response option).

Should I include the variable as it is, where one category becomes the
reference? Or should I consider the variable to be continuous? Or
should I instead use the tab command to create dummies for all five
response options, and include the ones I am interested in ( e.g.
strongly agree and agree responsea)?

Please advise

N. Tirivayi
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