I have a set of data of patients from different places who have had the same operation to remove their appendix. A small subset of the these patients have come back with cancer in the appendix. I calculated the incidence rate by dividing the total number of appendectomy/cancer of appendix and represented it as a percentage. I would like to compare the incidence rates of cancer of the appendix by state.
Sample data looks something like this
|State||Total number of appendectomy||Cancer in appendix||Incidence|
Is it possible for me to say that a state has a significantly higher or lower incidence rate than the other states? I want to suggest that by staying in a specific state places a patient at higher risk for cancer and maybe there's an environmental risk factor for this.
Or is there another way to represent the findings?