[R] AIC extract and comparison

From: Lisa <sangwl_at_gmail.com>
Date: Tue, 29 Apr 2008 14:06:03 -0700


Hi, I need to fit models and use AIC method to campare the best fitted model manually.

When i extract AIC by using extractAIC, it gave me the df and AIC values. Now the problem is, how can I compare the AIC values from two models? is there anyway to extract AIC with no df so that I can compare directly? Thank you!

> extractAIC(coxout)

[1] 1.000 1723.038

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