[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: RE: tobit or anything else?

From   "Verkuilen, Jay" <>
To   <>
Subject   st: RE: tobit or anything else?
Date   Sat, 12 Apr 2008 17:59:19 -0400

Berthold Hoppe wrote:

>>As -y- in censored (due to lower detection limit of the measurements)

-tobit- instead of -reg- seems to be adequate.<<

Not necessarily. Biological variables subject to lower DLs are
frequently right skewed, sometimes a lot. I would suggest looking at the
program -intcens-, which you can download. This fits interval censored
models, which you can use to handle the DL issue.  


*   For searches and help try:

© Copyright 1996–2017 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index