I have a retrospective clinical dataset containing one column with general follow-up time and particular columns for each unwanted outcome containing number of unwanted outcomes during follow-up period (hospitalization, transplantation, death). Since follow-up time is not outcome specific (except maybe death), I guess I need to compare outcomes between baseline subgroups using patient-time / patient-years approach. But I have a problem how to properly compare information on incidence rates between subgroups.
Does anyone have experience what statistical test can I use to compare incidence rates between subgroups?
What comes in mind is calculating 95% confidence interval for incidence rate in each subgroup and see if intervals cross, but I don't know how to do multivariate analysis based on this approach?
Thank you
Does anyone have experience what statistical test can I use to compare incidence rates between subgroups?
What comes in mind is calculating 95% confidence interval for incidence rate in each subgroup and see if intervals cross, but I don't know how to do multivariate analysis based on this approach?
Thank you
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