Hi, All
How does one remove relevant information from a regression output besides just the coefficients?
I've been able to modify the example given under "help(by)" to give me some additional information, but not everything I need.
If you adjust the call statement from what is listed by adding the summary statement like so:
tmp <- by(warpbreaks, tension, function(x) summary(lm(breaks ~ wool, data=x)))
sapply(tmp, coef)I am able to get the coefficients and the p-value (as well as 5 other rows of information I don't need, corresponding to St. error of the coefficients, t-values and the p-value of the intercept, but I can delete all this later).
If you look at tmp, all the F statistics, r-squared values, etc. are there, but is there an easy way to get at them reported in a tabulated form?
Specifically, is there a simple way I can adjust the "sapply" command to extract the F statistic, r squared, and degrees of freedom (in addition to the coefficients) and have them appear as rows in the output? Ultimately, I have 200+ groups that I am running regressions on in the same dataset, so I need some way to extract the relevant information in a tabulated form.
and no smart-alec comments about bonferonni corrections :)
Thanks,
Mike
Michael Rennie Ph.D. Candidate University of Toronto at Mississauga 3359 Mississauga Rd. N. Mississauga, ON L5L 1C6 Ph: 905-828-5452 Fax: 905-828-3792
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