Dear All
as I got this error massage for S-Plus , could you please let me know what
I can do to solve it.
lme<-lme(CRATIN~TIME,data=SS,random=~TIME|ID)
lme<-lme(CRATIN~TIME+HBA1C,data=SS,random=~TIME|ID)
Error in .C("mixed_loglik",: Singular precision matrix in level 1, block 1
Best Regards
Hosseini
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