\begin{table}[ht]
\centering
\begin{tabular}{llrr}
\hline
Analysis & Value & Efficacy & Futility \\
\hline
IA 1: 50\% & Z & 2.75 & 0.41 \\
N: 166 & p (1-sided) & 0.00 & 0.34 \\
& \~{}OR at bound & 0.35 & 0.86 \\
& P(Cross) if OR=1 & 0.00 & 0.66 \\
& P(Cross) if OR=0.41 & 0.34 & 0.03 \\
\hline
Final & Z & 1.98 & 1.98 \\
N: 332 & p (1-sided) & 0.02 & 0.02 \\
& \~{}OR at bound & 0.59 & 0.59 \\
& P(Cross) if OR=1 & 0.02 & 0.98 \\
& P(Cross) if OR=0.41 & 0.90 & 0.10 \\
\hline
\end{tabular}
\end{table}
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