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Fig. 2 | BMC Medical Research Methodology

Fig. 2

From: Power and sample size calculation for incremental net benefit in cost effectiveness analyses with applications to trials conducted by the Canadian Cancer Trials Group

Fig. 2

Impact 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 \({H}_{1}:b\left(\lambda \right)<0\)

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