Dear community,

I am working on a panel data analysis, where I have to generate a treatment variable. The panel data only covers two waves of household data, one from 2019 and one from 2022.
The treatment variable should indicate that at least one household member was contracted with Covid-19. The problem is that my treatment dummy only indicates the value of one for the year 2022 but not for the same subject in 2019.

The commands I used so far are:

gen time = 1 if year==2022,
replace time = 0 if year==2019,

xtset QID time

gen treated= 1 if cov_infected_cov!=0,
replace treated = 0 if cov_infected_cov==0


I would be very thankful for any advice to fix this problem.

Best regards!