Hi all,

If I have a panel of people from ages 25-30, who I may observe more than once in these ages, and I want to look at an independent variable that is "Ever used welfare" can I use a probit? The variable is 1 if you used welfare at that age ever, and 0 otherwise. My worry is that it is double counting. For instance, say that you used welfare at age 23. You will show up as a 1 if I observe you at age 25, and also as a 1 again when I observe you at age 28. Is this an issue?
Thanks!