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Dear Dr. Muthen, I need to run example of a LTA for two time points with a binary covariate influencin the latent transition probabilities using example EXAMPLE 8.13 I got the following errors: *** WARNING in VARIABLE command Variable G, used in KNOWNCLASS specification, has been removed from the USEVARIABLES list. Subsequent errors may occur if this variable is used elsewhere. *** ERROR in OUTPUT command Unrecognized option for OUTPUT: TECH15 |
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Dear Dr. Muthen, I'd appreciate your advice on specific changes I need to make to this input: NPUT INSTRUCTIONS TITLE: this is an example of a LTA for two time points with a binary covariate influencing the latent transition probabilities DATA: FILE = pooldatadorost.dat; VARIABLE: NAMES = u11-u18 u21-u28 g; CATEGORICAL = u11-u18 u21-u28; CLASSES = cg (2) c1 (4) c2 (4); KNOWNCLASS = cg (g = 0 g = 1); ANALYSIS: TYPE = MIXTURE; MODEL: %OVERALL% c1 c2 ON cg; MODEL cg: %cg#1% c2 ON c1; %cg#2% c2 ON c1; *** WARNING in VARIABLE command Variable G, used in KNOWNCLASS specification, has been removed from the USEVARIABLES list. Subsequent errors may occur if this variable is used elsewhere. *** ERROR in OUTPUT command Unrecognized option for OUTPUT: TECH15 |
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Please send your output and license number to Support along with your license number. |
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Dear Dr. Muthen & Muthen, Thank you very much. Sending output file attachment for you. Analyses were conducted using Mplus version5. |
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This option was not available until after Version 5. |
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Dear Drs. Muthen, Thank you very much for your answer I need to run example of a LTA for two time points. in both time1and time 2, we selected the four-latent-class model. I am register in www. stat model.com.I conducted with mplus version7.4 4-class LTA Model with measurement noninvariance LATENT TRANSITION PROBABILITIES BASED ON THE ESTIMATED MODEL C1 Classes (Rows) by C2 Classes (Columns) 1 2 3 4 1 0.000 1.000 0.000 0.000 2 1.000 0.000 0.000 0.000 3 0.000 0.000 1.000 0.000 4 0.000 0.006 0.000 0.994 4-class LTA Model with measurement invariance C1 Classes (Rows) by C2 Classes (Columns) 1 2 3 4 1 1.000 0.000 0.000 0.000 2 0.000 0.764 0.218 0.018 3 0.000 0.000 1.000 0.000 4 0.091 0.000 0.073 0.836 please advise me about my result. |
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Dear Drs. Muthen, note(( Structural Equation Modeling Applications Using Mplus) we selected model measurement noninvariance,but confused with seen result. 1 2 3 4 1 0.000 1.000 0.000 0.000 2 1.000 0.000 0.000 0.000 3 0.000 0.000 1.000 0.000 4 0.000 0.006 0.000 0.994 plese advise me |
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You should base your decision about measurement invariance or not using BIC or difference testing using likelihood-ratio chi-square. With non-invariance you don't know if the transitions you are considering refer to classes with the same substantive meaning. With non-invariance the class order may be different - perhaps class 1 and 2 are switched between the two time points. If so, it looks like everyone stays at the class they started in. For further interpretations matters, you may consult SEMNET. |
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