In the 3-class model, several of the estimated regressions of class differences on the ten SNPs had p values <0.1, however only rs11637630 was marginally significant after correction for multiple testing (early vs. medium onset, p value 0.011). In the 4-class model rs8040868 differentiated early and medium onset from late onset (p values 0.007 and 0.017). This SNP had a p value of 0.027 in the 3-class model (early vs. late onset). Rs11637630 significantly predicted differences between early and later onset (p value 0.006). Rs684513 was marginally significant in differentiating early from late onset (p value 0.017).
