Fig. 2From: Power and sample size calculation for incremental net benefit in cost effectiveness analyses with applications to trials conducted by the Canadian Cancer Trials GroupImpact of the correlation coefficient on the sample size power function curve, at the willingness-to-pay threshold of $100,000 Legend: Panels a), b), and c) were examined based on the hypothesis test: \({H}_{0}:\hspace{0.25em}b\left(\lambda \right)\le 0\), versus \({H}_{1}:b\left(\lambda \right)>0\). Panels d) and e) were examined based on the hypothesis test \({H}_{0}:\hspace{0.25em}b\left(\lambda \right)\ge 0\), versus \({H}_{1}:b\left(\lambda \right)<0\)Back to article page