Results of family-based and case/control association studies for eight SPA2 single-nucleotide polymorphisms (SNPs).^a

aRefer to Figure 1 for the study design. OT: overtransmitted to affected children allele; OR: odds ratio; CI: confidence interval. bAsymptotic P-values of the chi-square test for allele frequencies comparison between cases and controls. cAsymptotic P-values for combined family and case/control samples computed with the Cochran-Mantel-Haenszel test.