Before revision: Event "Z" in control group : 4 in 25 people Control Event Rate : 4/25 Event "Z" in experimental group : 12 in 25 people Experimental event rate : 12/25 Another worked example is as follows
After revision: Event "Z" in control group : 4 in 25 people Control event rate : 4/25 Event "Z" in experimental group : 12 in 25 people Experimental event rate : 12/25 Another worked example is as follows