Good morning fellow statalisters. I just have a quick question:

I currently have a dataset with multiple observations (individual responses) for multiple countries in multiple years. Now, when trying to xtset it I receive the r(451) error code which I expect given that I have repeating values of country/time. However, what I am trying to achieve is a panel data specification for individuals in a given country at time t. Would anyone be able to offer any assistance regarding how I'd go about attaining such a specification. I've tried collapsing the data set however for variables such as gender that don't vary over time this computes an mean of each of these for each country...

Thanks in advance!