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


From   Alan Acock <acock@mac.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: AW: st: imputing continuous values when respondents select categories, e.g., income category
Date   Fri, 24 Apr 2009 13:29:38 -0700

Thanks for recommending intreg. I was not familiar with this command. When I run the example in the reference manual, the estimated income is not always within the limits of the interval the respondent selected. Using their example and predicting est_income, here are the first 10 observations:
  +---------------------------+
     | wage1   wage2    est_wage |
     |---------------------------|
  1. |     .       5    4.266946 |
  2. |     5      10    7.502522 |
  3. |     5      10    10.19239 |
  4. |    10      15    8.924339 |
  5. |     .       5    8.116896 |
     |---------------------------|
  6. |     .       5     10.2202 |
  7. |     .       5    10.35355 |
  8. |     5      10   -2.894233 |
  9. |     5      10    13.32243 |
 10. |     5      10    9.792462 |

Some estimated values are well outside of the interval. Is it recommended to simply replace these with the interval boundaries?

Alan Acock
 
On Friday, April 24, 2009, at 12:08AM, "Martin Weiss" <martin.weiss1@gmx.de> wrote:
><> 
>
>For -intreg-, Maarten`s presentation at the Chicago meeting
>http://www.stata.com/meeting/snasug08/buis_MLBsimulate.zip
>could be interesting
>
>
>HTH
>Martin
>
>-----Ursprüngliche Nachricht-----
>Von: owner-statalist@hsphsun2.harvard.edu
>[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Roy Wada
>Gesendet: Freitag, 24. April 2009 07:38
>An: statalist@hsphsun2.harvard.edu
>Betreff: RE: st: imputing continuous values when respondents select
>categories, e.g., income category
>
>> imputing continuous values when respondents 
>> select categories, e.g., income category
>
>Is there advantages to doing it this way instead of 
>going through interval regression -intreg-? It will
>handle the top coding.
> 
>Roy
> 
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