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Anonymous posted on Wednesday, October 12, 2005  5:37 pm



Is it possible to have binary (0 and 1) variables at level2 in multilevel sem? 


Yes. This is possible. 


I am using a dichotomous outcome (yes/no DSMIV diagnosis) as 2 dependent variables in a 2 level model. When I include the command "categorical are XX XX", I get an error message "RECIPROCAL INTERACTION PROBLEM". Without the "categorical" statement, the model runs fine. Is it necessary to label dichotomous variables as categorical in multilevel modeling? 


Are you turning one yes/no variable into two variables? It sounds that way but maybe I misunderstand. If so, this is not necessary. Use only one variable. This variable should be placed on the CATEGORICAL list. 


Thank you for your response. I will list the 2 variables (they are two separate variables, each with a possibility of 0 for does not meet criteria and 1 for meets diagnostic criteria) as categorical. Now, is there anyway to amend the problem of "RECIPROCAL INTERACTION" with my data  or and I just not able to run this model? Thank you. 


Given that you have two variables, you need to send the input, data, output and your license number to support@statmodel.com so I can see what the reciprocal interaction message is coming from. 


Is there a solution to this problem? I have a model with a dichotomous independent variable, one dichotomous mediating variable, three continuous mediating variables and one dichotomous dependent variable. I have listed the dichotomous mediating and dependent variables in the CATEGORICAL list. Is there something that I should do differently so that I don't get the 'RECIPROCAL INTERACTION" message? 


Which version of Mplus are you using? 


It appears to be version 4. I am a doctoral student using the school's program. Would using the newer version eliminate my problem? 


Your problem should fit in the Demo. Try it there. I think a newer version would solve the problem. 


Okay I will thank you so much! 


Dr. Muthen, I downloaded the demo and tried it and I am still getting the "RECIPROCAL INTERACTION PROBLEM" message, is there something else that could cause me to get the message? 


Then you would need to send the input, data, and your license number to support@statmodel.com. 

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