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From |
Nick Cox <njcoxstata@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: RE: st: Checking to see if the association between two variables is linear or otherwise |

Date |
Sat, 13 Oct 2012 16:02:08 +0100 |

I am sympathetic to all parties here, but the difference seems a bit bigger than this implies. Using dummies doesn't even commit the analyst to the idea that level of education is ordinal scale, although my teaching career has been futile if that's not true. Using a regression spline does seem to treat level of education, or some transform of it, as at least interval scale. Nick On Sat, Oct 13, 2012 at 2:51 PM, JVerkuilen (Gmail) <jvverkuilen@gmail.com> wrote: > On Sat, Oct 13, 2012 at 3:20 AM, Justina Fischer <JAVFischer@gmx.de> wrote: >> see my post to David's comment. His critique applies only if educational levels are employed as continuous variable, which I never suggested. >> > > Dummies for education level bins is essentially a zero-order spline > and so a regression spline gives a way to compromise between the > "wiggly" regression implied by dummies and the overly smooth one > represented by a linear term, so the choice isn't really an either/or. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Checking to see if the association between two variables is linear or otherwise***From:*Amal Khanolkar <Amal.Khanolkar@ki.se>

**Re: st: Checking to see if the association between two variables is linear or otherwise***From:*"Justina Fischer" <JAVFischer@gmx.de>

**RE: st: Checking to see if the association between two variables is linear or otherwise***From:*Amal Khanolkar <Amal.Khanolkar@ki.se>

**Re: RE: st: Checking to see if the association between two variables is linear or otherwise***From:*"Justina Fischer" <JAVFischer@gmx.de>

**Re: RE: st: Checking to see if the association between two variables is linear or otherwise***From:*David Kantor <kantor.d@att.net>

**Re: RE: st: Checking to see if the association between two variables is linear or otherwise***From:*"JVerkuilen (Gmail)" <jvverkuilen@gmail.com>

**Re: RE: st: Checking to see if the association between two variables is linear or otherwise***From:*"Justina Fischer" <JAVFischer@gmx.de>

**Re: RE: st: Checking to see if the association between two variables is linear or otherwise***From:*"JVerkuilen (Gmail)" <jvverkuilen@gmail.com>

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