Relative risk
-the proportion of participants who were affected in the control group would still be affected in the experimental group.
a/a+b / c/c+d
Formula for Relative Risk?
Absolute Risk Reduction (ARR)
-what proportion of participants will benefit from experimental intervention.
a/a+b - c/c+d
Formula for Absolute Risk Reduction?
Relative Risk Reduction
what proportion of affected individuals in the control group would benefit from being in the experimental group.
RR - 1
Formula for Relative Risk Reduction ?
1/ARR
Formula for NNT & NNH?