Table 9 Sample size of the replication study needed for 6 diseases of WTCCC dataset when average power is estimated by plugging in observed effect sizes. The Control-to-Case ratio of the replication study is set to 1. The significance levels used in the primary study and the replication study are α ₁=5×10⁻⁸ and α ₂=5×10⁻⁶, respectively

From: Power estimation and sample size determination for replication studies of genome-wide association studies