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Re: st: Tobit regression where left vs right censoring cannot be determined in the preferred dependent variable


From   Richard Williams <Richard.A.Williams.5@ND.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Tobit regression where left vs right censoring cannot be determined in the preferred dependent variable
Date   Mon, 17 Apr 2006 11:12:56 -0500

At 09:59 AM 4/17/2006, volpe@rhodes.edu wrote:
I am attempting to perform a regression on a data set whose dependent variable is censored. The problem I'm running into, though, is that the variable itself is left censored at 100, but I want to look at the percentage of the population that is y as my dependent variable in the regression.

IE

Say that I've got the number of persons living in poverty. As a raw number, this is left censored at 100. Ideally, I want to look at the percentage of the population that is living in poverty. So not only do I fail to have a constant censoring value but, for a given city with fewer than 100 persons living in poverty, I am not certain if that city is left censored or right censored....

Do you have any idea how to handle this? Would it be all too terrible to enter poverty = 100 when poverty (raw) <100, and simply use OLS methods to analyze it?
Look at -intreg- and see if it appears to meet your needs.


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Richard Williams, Notre Dame Dept of Sociology
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