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Hello I am conducting the latent class growth mixture model for my study .This study uses data from the longitudinal cohort. Data includes 4 different phases.Phase 1 has a span of (2003-2006) and is following at 3 subsequent phases.we aimed to identify different patterns of BMI I WANTto describe the shape of the longitudinal trajectory of BMI WARNING: THE RESIDUAL COVARIANCE MATRIX (THETA) IS NOT POSITIVE DEFINITE. THIS COULD INDICATE A NEGATIVE VARIANCE/RESIDUAL VARIANCE FOR AN OBSERVED VARIABLE, A CORRELATION GREATER OR EQUAL TO ONE BETWEEN TWO OBSERVED VARIABLES, OR A LINEAR DEPENDENCY AMONG MORE THAN TWO OBSERVED VARIABLES. CHECK THE RESULTS SECTION FOR MORE INFORMATION. PROBLEM INVOLVING VARIABLE BMI3. WARNING: THE LATENT VARIABLE COVARIANCE MATRIX (PSI) IS NOT POSITIVE DEFINITE. THIS COULD INDICATE A NEGATIVE VARIANCE/RESIDUAL VARIANCE FOR A LATENT VARIABLE, A CORRELATION GREATER OR EQUAL TO ONE BETWEEN TWO LATENT VARIABLES, OR A LINEAR DEPENDENCY AMONG MORE THAN TWO LATENT VARIABLES. CHECK THE TECH4 OUTPUT FOR MORE INFORMATION. PROBLEM INVOLVING VARIABLE Q. |
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Please send the output and your license number to support@statmodel.com. |
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my sintax Title: bmi_growth.inp Basic growth curve Data: File is "plosemedicine_ONLYmplus.dat" ; Analysis: Processors = 2; Variable: Names are id age sex enter1 enter2 enter3 bmi_base bmi1 bmi2 bmi3; Missing are all (-9999) ; Usevariables are bmi_base bmi1 bmi2 bmi3 ; Model: i s q| bmi_base@-3 bmi1@-2 bmi2@-1 bmi3@0; Output: Sampstat Mod(3.84); Plot: Type is Plot3; Series = bmi_base bmi1 bmi2 bmi3(*); |
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Tank you send email please Guidance about included covariate(age)in my syntax. |
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