Treatment efficacy contrast functions
Details
These functions take the risk in the two treatment arms, and
computes a one-dimensional summary of those risks. Built-in choices are
"TE"
for treatment efficacy = 1 - risk_1(s)/risk_0(s), "RR"
for
relative risk = risk_0(s)/risk_1(s), "logRR"
for log of the relative
risk, and "RD"
for the risk difference = risk_0(s) - risk_1(s).