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From |
L S <lts40301@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Plotting a Local Polynomial Regression with CIs Accounting for Clustering |

Date |
Wed, 2 Dec 2009 12:55:59 -0600 |

Thank you to Maarten for the suggestion on mvrs. I think this seems more intuitive / simpler than the fractional polynoimals. Thanks a lot also to everyone for the other suggestions. The goal in doing this is actually not a regression discontinuity design, but rather to see whether actual data seems to fall along a line, which is predicted by theory. That is, I want to plot actual data against a theoretical prediction, plotting the actual data using a flexible functional form, and plotting a 95% confidence intervals. When people do regression discontinuity in Stata, what is the standard (or some of the standard) way / command for plotting the functional form on each side of the discontinuity? On Tue, Dec 1, 2009 at 7:16 AM, Austin Nichols <austinnichols@gmail.com> wrote: > You can do it with a local polynomial, it's just not terribly easy. > You have to pick the points at which you want to generate prediction, > perhaps quantiles of x, then -bsample- clusters, do the estimation, > and then -post- or otherwise save the estimates, and finally collect > all results. A similar strategy would work with -pspline- (-findit- > will find that option). > > As Nick Cox points out, it's also not clear why you want this. Are you > perhaps contemplating a regression discontinuity estimator? > > On Tue, Dec 1, 2009 at 3:09 AM, Maarten buis <maartenbuis@yahoo.co.uk> wrote: >> You can't do it with local polynomial curves. > * > * 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/ > * * 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/

**Follow-Ups**:**RE: st: Plotting a Local Polynomial Regression with CIs Accounting for Clustering***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**st: Question about kwallis p-value***From:*"Safaeian, Mahboobeh (NIH/NCI) [E]" <safaeianm@mail.nih.gov>

**Re: st: Plotting a Local Polynomial Regression with CIs Accounting for Clustering***From:*Austin Nichols <austinnichols@gmail.com>

**Re: st: Plotting a Local Polynomial Regression with CIs Accounting for Clustering***From:*Austin Nichols <austinnichols@gmail.com>

**References**:**Re: st: Plotting a Local Polynomial Regression with CIs Accounting for Clustering***From:*Maarten buis <maartenbuis@yahoo.co.uk>

**Re: st: Plotting a Local Polynomial Regression with CIs Accounting for Clustering***From:*Austin Nichols <austinnichols@gmail.com>

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