Getting the ATT in the form of percent increase in csdid_plot

[Luiza Lins]

Hello,

I am estimating the impact of the opening of a specific public facility on the number of people registered as homeless in cities. This public facility opens at different times for different municipalities (and never opens in some municipalities). Hence, I'm using Callaway and Sant'Anna's csdid function.

I estimate it as follows:

csdid count, ivar(city) time(year) gvar(open_year) notyet
estat event
csdid_plot

The issue is that the ATT in absolute terms doesn’t tell me much on its own. I would like to know the relative change instead. Since count = 0 for many cities, I cannot simply use the log transformation. Is there any way to obtain the ATT (preferably in the plot) in terms of percent increase or decrease?

Sorry if I made any mistakes.