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demaria
2011 Jun 13
1
Somers Dyx
Hello R Community,
I'm continuing to work through logistic regression (thanks for all the help on score test) and have come up against a new opposition.
I'm trying to compute Somers Dyx as some suggest this is the preferred method to Somers Dxy (Demaris, 1992). I have searchered the [R] archieves to no avail for a function or code to compute Dyx (not Dxy). The overview of Hmisc has mention of Dyx for the rcorr.cens function but this appears to be a misprint because the manual states the function finds Dxy. Peng and So (1998) state that the Dyx...