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| From | Maarten Buis <maartenlbuis@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | st: Re: st: Test of net balance of coefficients with opposite signs |
| Date | Wed, 18 Jul 2012 10:28:53 +0200 |
On Wed, Jul 18, 2012 at 8:03 AM, Stefan Göke wrote: > I have a fixed effects regression with two covariates (cov1 and cov2) > in focus and some controls. > > The coefficient of cov1 has a positive sign and the coefficient of > cov2 has a negative sign, both at the 1% significance level with a > Wald test of equality of coefficients rejecting the null hypothesis > that the coefficients are equal at the 1% significance level. I want > to test if "coeff1+coeff2 > 0" or "coeff1+coeff2 < 0", i.e. I want to > test the net balance of the coefficients. You can use -lincom- to compute the sum of the two coefficients, that is, what you called the nett balance, and the confidence interval around that sum. Hope this helps, Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/