tsset id t
gen dum = b == 1 & (F.z == 1 | F2.z == 1)
or
gen dum = b == 1 & inlist(1, F.z, F2.z)
So this is a Stata translation after setting up the data as panel data with a panel and time variable. The indicator (I advise against the term "dummy", often misunderstood as offensive) is
1 if and only if the present value of b
is 1 and either the next value or the next-but-one value of z
is 1
0 otherwise
EDIT: If "within the next two time periods" means "both" not "either" then the inlist()
solution is invalid and the |
should be &
, as in @Maarten Buis's answer.