Easy way to calculate incidence

[Mdormond]

I have a retrospective cohort study and I need to calculate incidence of disease within the population. I have time of first case and then also number of outcomes. Is there any easy way to calculate incidence with this information?

[Reeza]

Look at PROC STDRATE.

[Mdormond]

I'm not sure that's the correct procedure as I'm not trying to standardize the rate between two populations. Is there another similar procedure?

[Reeza]

I believe proc std rate will also give you the crude rate, which is essentially the incidence rate.

You don't need a proc for this, its a simple data step, but you do have to have your data in an appropriate format. So, if you need help with the data step, you should post a sample of what your data looks like and the output you need.