Hi programmers,
I have a variable assessed in two points (longitudinal data): 2019 survey, FS (coded as 0,1). 2020 survey, FS (coded as 0,1).
I want to create a change variable such that;
An observation with 0 in 2019 who is still 0 in 2020= variable A
An observation with 0 in 2019 who becomes 1 in 2020=variable B
An observation with 1 in 2019 who becomes 0 in 2020= variable C
An observation with 1 in 2019 who is still 1 in 2020=variable D
Is there a way I can code this? Do I need to create a flag variable in both years?
Please post a example for your data in a DATA step with DATALINES, so structure and content become more clear.
Please post a example for your data in a DATA step with DATALINES, so structure and content become more clear.
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