subject:"\[R\] Setting up contrasts"

RE: [R] Setting up contrasts

2004-05-03 Thread BXC (Bendix Carstensen)

> -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of David > J. Netherway > Sent: Monday, May 03, 2004 10:25 AM > To: [EMAIL PROTECTED] > Subject: [R] Setting up contrasts > > > I am using the following model: > lm &

[R] Setting up contrasts

2004-05-03 Thread David J. Netherway

I am using the following model: lm <- lm(mydata[[variableName]] ~ Age + Gender + Group, data=mydata) There are 5 groups in "Group": nonc (the control), c1,c2,c3 and c4. How do I contrast nonc vs the others? and How do I contrast c1 vs other c's (ie c2,c3,c4 as a subgroup)? I have looked at the