can you help me with the statement:
There was a statistically significant (P=0.004) 20% relative risk reduction in the CT group
risk reduction of what, cancer mortality? I don't see where the 20% is coming from in the 2 tables shown before part a
Hi Laura,
the statement refers to lung cancer mortality. Recall that the RRR is 1 - RR, and the RR is (a/a+b) / (c/c+d).
Best,
Kerstin