Mplus Users Guide v6.. - Muthén & Muthén

CHAPTER 15where the set of variables u1, u2, and u3 can have the categories of 1, 2,3, 4, 5, and 6. In this example, 1 will be recoded as 0, 2 as 1, 3 as 2, 4 as3, 5 as 4, and 6 as 5.Another variation of this is:CATEGORICAL = u1-u3 (2 4 6);where the set of variables u1, u2, and u3 can have the categories 2, 4,and 6. In this example, 2 will be recoded as 0, 4 as 1, and 6 as 2.The CATEGORICAL option can be used to specify that different sets ofvariables have different sets of categories by using the | symbol. Forexample,CATEGORICAL = u1-u3 (*) | u4-u6 (2-5) | u7-u9;specifies that for the variables u1, u2, and u3, the possible categories aretaken from the data for the set of variables; for the variables u4, u5, andu6, the possible categories are 2, 3, 4, and 5; and for the variables u7, u8,and u9, the possible categories are the default, that is, the possiblecategories are taken from the data for each variable.NOMINALThe NOMINAL option is used to specify which dependent variables aretreated as unordered categorical (nominal) variables in the model and itsestimation. Unordered categorical dependent variables cannot havemore than 10 categories. The number of categories is determined fromthe data. The NOMINAL option is specified as follows:NOMINAL ARE u1 u2 u3 u4;where u1, u2, u3, u4 are unordered categorical dependent variables inthe analysis.For nominal dependent variables, all categories but the last category canbe referred to. The last category is the reference category. Thecategories are referred to in the MODEL command by adding to thevariable name the number sign (#) followed by a number. The three490