Risk-utility plots. Performance comparison of Algorithm 1 and Algorithm 2 with χ2 statistic or Hamming distance score as score function. Each row corresponds to a fixed K, the number of top SNPs to release. Each column corresponds to a fixed threshold p-value, which is relevant to the mechanism based on Hamming distance score only. The threshold p-values 0.1 and 0.01 divided by the number of SNPs.