Dear List:
I have two separate questions:
(1) I have a treaty ratification variable that is coded as follows for the period 1976-2000:
0 = no signature
1 = signature
2 = ratification
How would I create a new variable that sums the years since full ratification, i.e. the total number of years from when the variable assumes a value of 2.
(2) The second question ivolves xtivreg with limited dependent variables. The treaty variable above is trichotomous. Do I need xtprobit? And is there an option to include an iv function? The estimates using xtivreg make sense intuitively but I am not sure that I using the correct procedure.
Cheers,
Todd
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