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Ordinal DV- only 1 set parameter esti... |
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Hi, I am running multinomial logistic regressions in mplus and my DV is ordinal with 4 levels (match persistence: 0 = 3-6mos; 1= 6-9 mos; 2 = 9-12mos; and 3 = 12 months +). However, my output only has one set of parameter estimates, despite the 4 ordinal categories. I am confused b/c I expected 4 sets...??? Any ideas? Here is my model syntax for reference: usevariables = persist2 childage volsex ACrel_2 ACgd_2 exp3m frus3m white bach author; missing = all (999); categorical = persist2; analysis: estimator = MLR; ITERATIONS = 1000000; INTEGRATION = MONTECARLO; model: persist2 on ACrel_2 ACgd_2 childage volsex exp3m frus3m white bach author; output: sampstat stdyx; |
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You talk about multinomial regression which is for a nominal DV, but then you say your DV is ordinal. The DV is specified as ordinal if you use Categorical= and it is specified as nominal if you use Nominal=. |
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Yes, I'm sorry, to be clear- I have an ordinal DV and I am using the specification Categorical. Since there are 4 levels, why am I not getting 4 sets of parameter estimates..? |
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With a 4-category ordinal DV regressed on an x variable, you get 1 slope and 3 thresholds. See our video and handout for Topic 2 of our short courses on our website. |
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