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From |
Clive Nicholas <clivelists@googlemail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: imputing continuous values when respondents select categories, e.g., income category |

Date |
Tue, 28 Apr 2009 13:37:35 -0400 |

Richard Williams replied: > I am not sure what you mean by "implicate" but I suppose that most or all of > what is true of intreg is also true for xtintreg. Also, I wonder about your > statement that the data are in no way censored. I think the lower and upper > bounds are supposed to be regarded as negative and positive infinity, even > if in practice the observed range is much more limited than that. > > FYI, I have a hypothetical example where intreg works spectacularly well: > > http://www.nd.edu/~rwilliam/xsoc73994/intreg3.pdf > > However, as noted in the handout, everything is set up so intreg's > assumptions are met. A simulation analysis examining how well it worked > when assumptions were violated would no doubt be useful. Apologies for the delay, and I cannot access your PDF at present. Here, 'implicate' meant 'also apply to'. Tobit models, so far as I understand them, are suitable for dependent variables which are 'left-censored', which normally means that it contains a disproportional number of zeros, much of which is information not fully realized. My argument was that my data for -xtintreg- doesn't fit that description, and that it was my understanding that it was more suitable for ordinal-level dependent variables. I could be wrong; I often am. -- Clive Nicholas [Please DO NOT mail me personally here, but at <clivenicholas@hotmail.com>. Please respond to contributions I make in a list thread here. Thanks!] "My colleagues in the social sciences talk a great deal about methodology. I prefer to call it style." -- Freeman J. Dyson. * * 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**:**RE: st: imputing continuous values when respondents select categories, e.g., income category***From:*jverkuilen <jverkuilen@gc.cuny.edu>

**RE: st: imputing continuous values when respondents select categories, e.g., income category***From:*Richard Williams <Richard.A.Williams.5@ND.edu>

**Re: st: imputing continuous values when respondents select categories, e.g., income category***From:*Clive Nicholas <clivelists@googlemail.com>

**Re: st: imputing continuous values when respondents select categories, e.g., income category***From:*Richard Williams <Richard.A.Williams.5@ND.edu>

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