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The only way that categories should be 13 would be if you had a cross-classified model. Am happy to take a look if you want to send me the dataset.

Hiya Bill,
Right, it sounds like I'm completely misunderstanding the way my data should be structured. Which at least explains what's going wrong. I ...

Dear Bill,
Thank you for taking the time to help me with this, it's very kind of you. (Sorry for my own delay in replying, I was at the RGS conference.)

The structure is that each GOR has the same set of 13 categories, but each with their own independent set of measurements. So London will have ...

Hiya,

I've hit a wall with my multilevel models, which I was hoping someone could help me with. It's almost certainly because I'm using MLWin wrong, so with any luck, someone will be able to point out my obvious mistake.

I have monthly inflation indices for a series of categories of goods for the ...