Dear all,

I am now doing the logistic regression using R. (glm, family=binomial).  Besides the standardize summary statistics generated from R, I am also interested in some more informations concerning the model fitting / prediction etc; Particularly I am interested in "pseudo R squar" and "C statistic". I searched the R- help and could only get very limited information. (Post by  Frank Harrell  mentioning about "the somers2 or rcorr.cens functions in the Hmisc library." ) However, I tried but still could not get through it. Also I found someone mentioned about do it manually.

Could someone give me a more detailed information on how I could get these two summary statistics after performed the the logistic regression using glm?


Thank you very much.

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Xiaojing Wang    PhD
Research Assistant Professor, Dept. of Oral Biology
School of Dental Medicine, University of Pittsburgh

Suite 500, Bridgeside Point
100 Technology Drive
Pittsburgh, PA 15219
Tel:412-648-9206  Fax:412-648-8779
Email:xiw23@pitt.edu
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