Table 1. Type-I errors of the proposed method for two cases when the non-centrality of the chi-square distribution is uncorrected and corrected.

The number of permutations for estimating the non-centrality is 5 times for Cf = 0.0, 10 times for Cf = 0.1 or 0.3, and 30 times for Cf = 0.5.

MAF, minor allele frequency; Cf, censoring fraction; Uncorr, uncorrected; Corr, corrected.