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lpfh1
2000 Jun 07
1
forward stepwise selection
...rt with just a constant and do forward
selection, to get a new starting model for full stepwise selection again.
But R (version 0.99.0) doesn't like this.
> step(lm(ANB.DIFF~.,tink4),trace=0)
Call:
lm(formula = ANB.DIFF ~ SEX + AGE.YRS + OJS + S.AR1 + CD.GO1 + CD.GN1 +
AR.GN1 + UAFH1 + UPFH1 + LPFH1 + AFP1 + PFP1 + OJ1 + SNA1 + SNB1 +
SN.POG1, data = tink4)
Coefficients:
(Intercept) SEXmale AGE.YRS OJS S.AR1
-0.05001 0.47100 0.11148 -0.10458 0.11228
CD.GO1 CD.GN1 AR.GN1 UAFH1 UPFH1
0.28847...