try this: coef(summary(mod))[, "Std. Error"]
I hope it helps. Best, Dimitris ---- Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm ----- Original Message ----- From: "Manuele Pesenti" <[EMAIL PROTECTED]> To: <r-help@stat.math.ethz.ch> Sent: Tuesday, July 24, 2007 12:02 PM Subject: [R] values from a linear model > Dear R users, > how can I extrapolate values listed in the summary of an lm model > but not > directly available between object values such as the the standard > errors of > the calculated parameters? > > for example I got a model: > > mod <- lm(Crd ~ 1 + Week, data=data) > > and its summary: > >> summary(mod) > > Call: > lm(formula = Crd ~ 1 + Week, data = data, model = TRUE, y = TRUE) > > Residuals: > Min 1Q Median 3Q Max > -4.299e-03 -1.653e-03 2.628e-05 1.291e-03 5.130e-03 > > Coefficients: > Estimate Std. Error t value Pr(>|t|) > (Intercept) 1.000e+01 3.962e-04 25238.73 <2e-16 *** > Week 5.038e-04 6.812e-06 73.96 <2e-16 *** > --- > Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 > > Residual standard error: 0.001966 on 98 degrees of freedom > Multiple R-Squared: 0.9824, Adjusted R-squared: 0.9822 > F-statistic: 5469 on 1 and 98 DF, p-value: < 2.2e-16 > > I'm interested in values of Std. Error of coefficients... > > thank you very much > > Best regards > Manuele > > -- > Manuele Pesenti > [EMAIL PROTECTED] > [EMAIL PROTECTED] > http://mpesenti.polito.it > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.