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Thread: Reporting results of nonparametric regression

  1. #1
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    Question Reporting results of nonparametric regression




    Hi!
    I am wondering how you present the results of non parametric regression test.
    I run the nonparametric regression using R, and the package np

    I get p- values but no df or t statistic.
    For example

    > library(np)
    > prop <- npreg(Respprop ~ Colony + Localden + Agg.prop, regtype = "ll",bwmethod = "cv.aic",gradients = TRUE, data = resp)

    > summary(prop)

    Regression Data: 176 training points, in 3 variable(s)

    No. Complete Observations: 176
    No. Incomplete (NA) Observations: 8
    Observations omitted or excluded: 5 14 41 98 114 165 181 184
    Colony Localden Agg.prop
    Bandwidth(s): 1783119425 3.558041 0.4823368

    Kernel Regression Estimator: Local-Linear
    Bandwidth Type: Fixed
    Residual standard error: 0.205017
    R-squared: 0.2364211

    Continuous Kernel Type: Second-Order Gaussian
    No. Continuous Explanatory Vars.: 3

    > npsigtest(prop)

    Kernel Regression Significance Test
    Type I Test with IID Bootstrap (399 replications, Pivot = TRUE, joint = FALSE)
    Explanatory variables tested for significance:
    Colony (1), Localden (2), Agg.prop (3)

    Colony Localden Agg.prop
    Bandwidth(s): 1783119425 3.558041 0.4823368

    Individual Significance Tests
    P Value:
    Colony 0.69173
    Localden < 2e-16 ***
    Agg.prop < 2e-16 ***

    For the normal regression tests I did with other data, I presented the sample size, degrees of freedom, t statistic and the p value.
    So how do I present the results of the above nonparametric test like the normal regression tests?

    Any advice and input will be greatly appreciated!
    Thanks!
    Last edited by nieve5552; 02-19-2016 at 10:27 PM.

  2. #2
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    Re: Reporting results of nonparametric regression


    Not familiar with the package. Perhaps typing

    ??Np or is it ??(np)

    May help you review the source documentation and understand what occurs.
    Stop cowardice, ban guns!

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