I have repeated measures data and tried to analyze them with proc mixed in SAS 9. I found that with some covariance structure the sas got stuck there, saying "stop becuase of infinite likelihood". It is a big data set (1500*5 observations) with ~300 missing data. Anyone could tell me what's the problem and how should I deal with it?
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? Infinite likelihood in proc mixed
- Thread starter Oliverwxg
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