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

st: Treat zeros in logarithms

From   "Mentzakis, Emmanouil" <[email protected]>
To   "'[email protected]'" <[email protected]>
Subject   st: Treat zeros in logarithms
Date   Tue, 26 Aug 2008 17:57:19 +0100

Dear all,

I have an interval regression model and for some cases the lower bound is zero. As I want to take the logarithm of the bounds I run into problems.

The same issue has come up previously in the list and below is the link of a detailed answer by Nick Cox.

As Nick points out an acceptable strategy is " replace the zeros by half the smallest non-zero measurement..."

I was wondering if anyone could provide any references of published papers that have employed such approach.

Best regards

The University of Aberdeen is a charity registered in Scotland, No SC013683.

*   For searches and help try:

© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index