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. 2016 Jun 9;99(1):89–103. doi: 10.1016/j.ajhg.2016.04.013

Table 4.

The Optimal Meta-analysis Strategy to Combine Summary Statistics for Imputed and Observed Phenotype Achieves Maximum Power

rsID Imputation-Based Fixed-effect Meta-analysis Power General Fixed-Effect Meta-analysis Power
rs673548 83.56% 82.30%
rs10096633 62.14% 45%
rs3923037 63.65% 60.86%
rs6728178 80.96% 80.00%
rs6754295 75.49% 74.31%
rs676210 82.01% 80.85%

Imputation-based fixed-effect meta-analysis uses the optimal weights that are shown in Equation 17. General fixed-effect meta-analysis uses the typical fixed-effect meta-analysis weights where the weight for each study is the square root of the number of samples in the study.