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From |
Stas Kolenikov <skolenik@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Regression splines with survey data |

Date |
Wed, 8 Jun 2011 12:24:48 -0500 |

The splines are splines... some are smooth, some are not, so the choice is basically the matter of aesthetics (do you want your scatterplots to be curvy or zigzagged?) Eventually splines enter a regression as explanatory variables, so you'd be running -svy: reg- with any of them. If you have a strong theory that suggests a particular type of splines, then of course you should be using these splines, but other than that, I don't see anything that would distinguish one type of splines over others. I am assuming you are familiar with methodological work on semi-parametric models for complex survey data (Jean Opsomer; Sharon Lohr). I cannot claim familiarity with that sort of stuff, unfortunately. I would expect the appropriate asymptotics to be quite complicated. Splines probably have their own weird sub-n^{-1/2} convergence rates, and survey data must have a joint growing asymptotic rates of the finite population and the sample, which still leaves room for growth either in number of strata, number of clusters per stratum, number of units per cluster, etc. Marrying the two must be a real mathematical nightmare. On Wed, Jun 8, 2011 at 12:05 PM, Prisciandaro, James J <priscian@musc.edu> wrote: > Hello list, > > I am hoping to do some analyses using regression splines with survey data. Specifically, the data have sample weight and stratification (and possibly cluster) variables that need to be taken into account. I was wondering which regression spline programs will work with "svy" in stata; I've noticed most regression spline programs are user contributed, and there are probably much more than I am aware of, but I am particularly interested in multivariable regression spline models by Royston ("mvrs"). I'm also aware of mkspline and bspline. > > If it weren't for the complex sampling aspect, I would be using a free equivalent of the MARS program (e.g., Earth for R). > > Thanks in advance, > Jim > > * > * 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/ > -- Stas Kolenikov, also found at http://stas.kolenikov.name Small print: I use this email account for mailing lists only. * * 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/

**References**:**st: Regression splines with survey data***From:*"Prisciandaro, James J" <priscian@musc.edu>

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