Re: extracting rows of $coefficients by variable name?

[Chuck Cleland <ccleland@optonline.net>]

Steve Sullivan wrote:
> Is there a handy way to extract information from a summarized lm or glm 
> object’s $coefficients by variable name?  I want to pull out only the 
> coefficient estimate, SE, t-value and p-value for a particular variable 
> (my treatment indicator).
Steve:
  You could use use subscripting on the returned matrix with 
grep() to isolate the row by name.  Here is an example:
my.lm <- lm(Y ~ ., data = mydata)

summary(my.lm)$coefficients[grep("COND", 
row.names(summary(my.lm)$coefficients)),]
where "COND" matches a particular coefficient name

hope this helps,

Chuck Cleland