Economic significance

[NOURHENE BEN YOUSSEF]

Hi everyone,
Does anyone have an idea how to find the economic significance of a variable, knowing the dependent variable is count variable (number of days) and the independent variable is a ratio (%)? I am using poisson regression, specifically ivpoisson.
Thanks.

[Faisal Abdullah]

Dear Nourhene,
In Economic significance, you look at the magnitude and the sign of the coefficient.
BEST,
Faisal

[NOURHENE BEN YOUSSEF]

Does it apply for all types of regression: OLS, 2SLS, poisson, ivpoisson? Because the coefficient under 2SLS is high compare to the one under ivpoisson, which is close to zero.
Thanks for your help.

[Maarten Buis]

The coefficients mean different things, so you cannot compare them directly.

At its core substantive (economic) significance is subjective. You look at the coefficients, understand how to interpret those, think carefully on what you think would be large or small, then you decide whether it is substantively significant or not, and start explaining to your audience why you think it is substantively significant (typically this involves some kind of comparision with a well known (large) effect).