Hey guys,

I want to create one dummy variable which assigns a value of 1 for values above 90 percentile cites for each journal.
What I mean is that I want a dummy variable = ( if journal = "A", cites >107 AND if journal = "B", cites >92 AND if journal = "C", cites >55 AND if journal = "D", cites >51 AND if journal = "E", cites >106)
How do I do it?

journal N(cites) p90(cites)
----
A 152 107
B 227 92
C 181 55
D 156 51
E 144 106
----

Thanks!