I am working with a longitudinal data; students received a degree at a certain time; I wonder how I can change all the values to 1 after degree attainment. For example, this is what my data looks like now:
Id time award
1 1 .
1 2 .
1 3 1
1 4 .
1 5 .
What I would like to do is to change the two missing values for time=5 and time=6 into 1. Any help is appreciated~!
Look up the lag function and retain statement.
And all the caveats that surround them
I did....still have not figured out how to do it....Any ideas?
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