We are using Proc ARIMA to estimate daily mortality using daily time series data from the previous 4 years. There are daily trends that we would like to be captured in our model, which is why we prefer to use daily time series data instead of monthly.
Our issue is that we want to present our daily estimates as monthly estimates. Is there a method we could use to sum our daily estimates and calculate a 95% confidence limit around those aggregates?
Here is the code used to produce our daily estimates:
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