[R] calculating an interaction statistic from stratified data

2010-04-04 Thread Georg Ehret
Dear R community, I have data on betastandard error (for the main effect of variable x), stratified by sex for my dataset. I wish to calculate the sex-interaction effect (as betase) from these two stratified datasets. Is there a package to do this? If not, any advice how to do it manually?

Re: [R] calculating an interaction statistic from stratified data

2010-04-04 Thread Alvarez, Joann Marie
[georgeh...@gmail.com] Sent: Sunday, April 04, 2010 5:01 PM To: r-help Subject: [R] calculating an interaction statistic from stratified data Dear R community, I have data on betastandard error (for the main effect of variable x), stratified by sex for my dataset. I wish to calculate the sex