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ironresults
2004 Aug 09
1
linear regression
...r regression successfully on R a few times before. But this
time it keeps telling me:-
"Error in lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) :
0 (non-NA) cases"
The model is:-
fm1 <- lm(TS.CM ~ AGE + SEX + HFE.Y.01 + TFC2B.01 + HFE.Y.01*TFC2B.01, data
= IRONresults, subset = DIAG2.1D == 0)
summary (fm1)
TS.CM is a continuous variable (%s), sex is coded 0 = women, 1 = men,
DIAG2.1D is coded 0 = non-demented, 1 = ALzheimer's disease and the genes,
HFE.Y.01 & TFC2B.01, are coded 0 = non-carrier and 1 = carrier
I've tried recoding the data to use...