search for: sdgd

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2018 Mar 22
3
How do I include a factor in a groupedData object? Meaning and use of inner and outer parameters
...use for the inner= and outer= parameters in the call to groupedData. Can someone either explain the meaning of these parameters or refer me to a source that give a clear explanation? > fit0 <- lmer(THmean~INTRVNTN+factor(TimePtID)+INTRVNTN*factor(TimePtID)+(1|PatientID),data=smalldata) > sdgd <- groupedData(THmean~INTRVNTN+TimePtID+INTRVNTN*TimePtID|PatientID,data=smalldata) Warning messages: 1: In Ops.factor(INTRVNTN, TimePtID) : ?+? not meaningful for factors 2: In Ops.factor(INTRVNTN, TimePtID) : ?*? not meaningful for factors Thank you, John John David Sorkin M.D., Ph.D. Pro...
2018 Mar 22
0
How do I include a factor in a groupedData object? Meaning and use of inner and outer parameters
...and outer= parameters in the call to groupedData. Can someone either explain the meaning of these parameters or refer me to a source that give a clear explanation? > > >> fit0 <- lmer(THmean~INTRVNTN+factor(TimePtID)+INTRVNTN*factor(TimePtID)+(1|PatientID),data=smalldata) >> sdgd <- groupedData(THmean~INTRVNTN+TimePtID+INTRVNTN*TimePtID|PatientID,data=smalldata) > Warning messages: > 1: In Ops.factor(INTRVNTN, TimePtID) : ?+? not meaningful for factors > 2: In Ops.factor(INTRVNTN, TimePtID) : ?*? not meaningful for factors > > > Thank you, > >...