# Curiousity about the significance symbol in Stata?

Today when I read the esttab command of Stata, I saw the star options description:

star[(symbol level [...])] causes stars denoting the significance of the
coefficients to be printed next to the point estimates. This is the
default. Type nostar to suppress the stars. The default symbols and
thresholds are:  * for p<.05, ** for p<.01, and *** for p<.001.
Alternatively, for example, type star(+ 0.10 * 0.05) to set the
following thresholds: + for p<.10 and * for p<.05. Note that the
thresholds must lie in the (0,1] interval and must be specified in
descending order.


I know how to convert it to * for p<0.1, ** for p<0.05, *** for p<0.01 (the commonly-used p-value to set the levels of significance). But I am wondering why Stata set the default like that, is there anything important that I missed?

For example, while in economics ** signifies p-value of $$0.05$$ in physics ** is commonly used for $$5\sigma$$ significance which corresponds to p values of $$0.0000006$$ (for two tailed test). Although some papers there avoid the use of stars altogether.
1. The esttab command is not official stata command, it is user written command, written by Ben Jann from Institute of Sociology, University of Bern. You can contact the author if you want to know reason for such selection. I conjecture that the field/subfield where the author works uses * for $$0.05$$, ** for $$0.01$$ convention, as it made some sense to him if he coded it this way, only way to know for sure is to contact the author and ask.