Just as numbers I think. Here's the context: Essentially I have panel data with 1 record per person in my study for each month of the study (study is 5 years so 60 records per individual). The challenge that I am running into is that the "age" variable I was given is calculated as the persons age at the beginning of the study, and it is static (so if someone is 18 at the beginning of the study, the the value of "age" is 18 in all 60 records, even though they clearly aren't 18 after the first year.) I need to keep as many records as possible, so I'm hoping to generate a new variable that will update the given "age variable" every month. Also, because I don't actually know the birthdays of my participants, for the purposes of creating this variable, everyone's birthday is July 2nd. So on July 2nd everyone gets a year older. It's a bigger question than I originally asked, but I thought the broader context might be helpful. If you care to offer any potential solutions I'd be eternally grateful. I'm not sure if that's enough info, happy to give you anything else you need. Mike
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