Sample Size Calculation Based On Hazard Ratio
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Sample Size Calculation Based On Hazard Ratio. · 5% is the usual choice for alpha. Try several in order to explore/scope.
Q1 = proportion of subjects in group 1 (exposed);
Rh = relative hazard group 1/group 0 . Number of events, given relative hazard. · 5% is the usual choice for alpha. Thus we have χ22d,α=2dkλ0 and hence k=χ2 .
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