search for: model94c

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2011 Aug 19
0
rms:fastbw variable selection differences with AIC .vs. p value methods
...(several interactions of continuous variables). However, one interesting variable stays or leaves based on whether I choose "p value" or "AIC" options to fastbw(). My question boils down to this: Is there a theoretical reason to prefer one over another? Consider: fastbw(model94c, aic=1e10) Deleted Chi-Sq d.f. P Residual d.f. P AIC ToD 0.11 3 0.9903 0.11 3 0.9903 -5.89 Experience * ToD 2.56 3 0.4646 2.67 6 0.8487 -9.33 Experience * Assoc 0.45 2 0.7970 3.13 8 0.9262 -12.87 RatePressure...