level 1 variance

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Posts: 1
Joined: Tue Dec 11, 2018 11:52 am

level 1 variance

Post by med151991 » Tue Dec 11, 2018 11:55 am


I am running a three level repeated measures model with a binary outcome (level 1 occasion, level 2 people, level 3 area). In my model, I am unable to check the level one (occasion) box when I add the cons as it does not appear, only the fixed parameter, level 2 and level 3 boxes appear, and just wondered how I can get this box up or if I am doing something wrong?

Many thanks,


Posts: 102
Joined: Fri May 21, 2010 1:21 pm

Re: level 1 variance

Post by billb » Wed Dec 12, 2018 11:28 am

Hi Megan,
As you are fitting a binary outcome the model is a Binomial model and so is there no level 1 variance i.e. for the binomial distribution the variance is a function of the mean so therefore the box disappears. Hope this makes sense.

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