There is a cohort study of 500,000 individuals with over 70 conditions. For each condition, I need to calculate
Annual standardized prevalence, with time since birth as the underlying time scale
Annual incidence rates and ratios, with time since birth as the underlying time scale
I want to standardize by region, sex and year of birth.
I'm completely new to this calculation. Can someone kindly guide me wt to be done. Even the steps to be following are enough
Here below I have shown a screenshots of my dataset