search for: tail_nona

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2011 Jun 27
1
Recoding several variables into one use the most recent data
Hi, I have the following data management issue. I am trying to combine multiple years of ethnicity data into one variable called ethnic. The data looks similar to the following id ethnic07 ethnic08 ethnic09 ethnic10 1 1 1 1 1 2 1 1 2 2 3 3 4 4