Dear Stata Users:
I have a panel data with i is id (person) and t is
year. Suppose I have only three years. Since I have a
unbalanced panel, I want to find how many persons (i)
have only 1 year's data, and how many have only 2
years' data, and how many have 3 years data.
Is there a convenient way to do this in Stata? Thanks
for your help in advance.
Shuaizhang
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