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2004 Jun 30
1
linear models and colinear variables...
...9;m working on. The basic, all inclusive form looks like lm(mic ~ B * D * S * U * V * ICU) Where mic, U, V, and ICU are numeric values and B D and S are factors with about 16, 16 and 2 levels respectively. In short, there's a ton of actual explanatory variables that look something like this: Bstaph.aureus:Dvan:Sr:U:ICU There are a good number of hits but there's also a staggering number of complete misses, due to a combination of scare data in that particular niche and actual lack of deviation from the categorical mean. My suspicion is that there's a large degree of colinearity in s...