Statalist


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

st: Interpreting a log-level specification with a rate


From   "[email protected]" <[email protected]>
To   [email protected]
Subject   st: Interpreting a log-level specification with a rate
Date   Sat, 8 Mar 2008 16:53:54 +0100

Hello,
I have a statistics related question, not directly stata. But maybe
still somebody can help me as I am puzzeled.
I ran a regression
log(y) = c + b*m

where m is the migration rate per 1000 residents. I want to know how
to interpret the coefficient b. In text books the usual interpretation
for log-level specification is
% delta y =  (100 b) delta m

So delta m is taken as 1 and an increase by 1 unit in the independent
leads to a b*100 percentage increase in y.
But I have a rate per thousand as the independent variable. Hence an
increase by 1 unit would mean 1000 emigrants per 1000 resident which
doesn't make much sense. Has anybody any thoughts?
Best,
Stefan
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



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