Hi there! Thank you for your response and sorry for not stating the issue. Basically, I am trying to put people's identity at the second level and see if there is any random effect. I have a bunch of other variables mostly ordinal and dummy at the first level, such as age group, years of experience, gender etc. Data looks something like this: ID ID's_Gender ID's_Age_Group Outcome Variable1 Variable2 1 F 1 Yes 1 3 1 F 1 No 2 3 1 F 1 No 1 2 2 M 2 Yes 2 2 2 M 2 Yes 1 3 So here are my quetsions: 1) My random effects turned out to be all zero. How do I tell if the zero is a valid result? 2) If it is, can I conclude that there is no random effect and change the model to a logistic regression and simply place people's identity as a vairable? If I do this then I am not able to control for any variables related to the ID. Because the question of interest is really to see how a perosn did comparing to another. THANK YOU SO MUCH!
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