How to create interaction variable in stata

[Ainun Nisa]

I have 2 independent variables and i need to create an interaction from both variable.
The first variable is distance to financial institution and i made the data became categorical (1: 0-1km; 2: 1-10km; 3: >10km)
The second variable is health shock in the dummy form. 1 for health shock occur, and 0 for health shock doesnt occur.
My data is panel for year 2007 and 2014.
Can i make an interaction from both variable? If yes, how can i do that?

[Carlo Lazzaro]

Airun:
yes, you can (see -fvvarlist- for more details):

 xtset panelid year
xtreg <depvar> <otherpredictors> i.distance##i.shock <controlsifany>

[Ainun Nisa]

Thank you very much for your help. Finally i can finish my analysis for this topic