'Baseline' in Health Impact Results



If I have 365-day year, the ‘Baseline’ column in Health Impact Results equals my number of cases of some incidence. However, for 366-day year, I get differenet values.

I add scalar A=1/365 or 1/366 in Health Impact Function Definition for short-term functions and my Baseline Function is ‘IncidencePOPA’. Should I change something else if there is 366 days? The Population Dataset and the Population Year are correct becuse I tried to use the same data with the 365-day year and the Baseline was eqaul to the number of cases of the incidence.
I would appreciate any replies.