variance increasing

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med151991
Posts: 13
Joined: Tue Dec 11, 2018 11:52 am

variance increasing

Post by med151991 »

Hello,

When I run a null or basic adjusted model by age and sex only the variance is low, but when I fully adjust the model including adding area level variables, the variance (random intercept) increases? Does this incidate a problem somewhere as I thought that it should decrease when adjusting the model? Thanks in advance :)
ChrisCharlton
Posts: 1292
Joined: Mon Oct 19, 2009 10:34 am

Re: variance increasing

Post by ChrisCharlton »

Bill gives some reasons why the variance can increase in his first comment in the following thread. It might be worth seeing whether that helps to explain what you are seeing too:

https://www.cmm.bristol.ac.uk/forum/vie ... f=1&t=3624
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