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1. [S] Logistic Regression Model Selection in S-Plus (score: 1): Author: "Katki, Hormuzd (NCI)" <katkih@mail.nih.gov>; Date: Wed, 7 Apr 1999 13:45:46 -0400; Dear S-Plus users, The issue is how to select the optimal # of knots for covariates represented as cubic splines in a logistic regression. The goal is to determine the relationship between probabilit; /archives/html/s-news/1999-04/msg00040.html (9,121 bytes)
2. Re: [S] Logistic Regression Model Selection in S-Plus (score: 1): Author: Frank E Harrell Jr <fharrell@virginia.edu>; Date: Wed, 7 Apr 1999 14:10:51 -0400; Dear Hormuzd, A few of quick thoughts: 1. If you spend a lot of effort in optimizing the knot locations, it becomes difficult to get the correct confidence bands for the functional form. Model uncert; /archives/html/s-news/1999-04/msg00042.html (11,004 bytes)

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