Re: [R] Marginal Effect larger than 1 for a binary variable (summary.Design after lrm)

2006-10-27 Thread Frank E Harrell Jr
Minyu Chen wrote: > Dear All: > > I run a logistic regression (using lrm in the Design package), and > after that, I use the command "summary" to get the marginal effects > of each variable. But one strange thing happens on my binary > dependent variable: The marginal effect of it jumping fr

[R] Marginal Effect larger than 1 for a binary variable (summary.Design after lrm)

2006-10-27 Thread Minyu Chen
Dear All: Sorry if I duplicated the mail, as I just registered and not knowing whether the former mail went through. I run a logistic regression (using lrm in the Design package), and after that, I use the command "summary" to get the marginal effects of each variable. But one strange thing

Re: [R] Marginal Effect larger than 1 for a binary variable (summary.Design after lrm)

2006-10-27 Thread Minyu Chen
On Oct 27, 2006, at 5:54 PM, Minyu Chen wrote: > Dear All: > > I run a logistic regression (using lrm in the Design package), and > after that, I use the command "summary" to get the marginal effects > of each variable. But one strange thing happens on my binary > dependent variable: The ma

[R] Marginal Effect larger than 1 for a binary variable (summary.Design after lrm)

2006-10-27 Thread Minyu Chen
Dear All: I run a logistic regression (using lrm in the Design package), and after that, I use the command "summary" to get the marginal effects of each variable. But one strange thing happens on my binary dependent variable: The marginal effect of it jumping from 0 to 1 is 1.77. I believe