Table 3. SNP-SNP interaction models identified by the GMDR method with adjustment for age, gender, and education.

Best interaction model	Testing accuracy (%)	P value
ADAMTS9 rs9985304, ADAMTS9 rs76346246	68.72	< 0.001
ADAMTS9 rs4317088, ADAMTS9 rs4566532, ADAMTS9 rs7642530	67.40	< 0.001

GMDR = generalized multifactor dimensionality reduction.

P value was based on 1,000 permutations. Analysis was obtained after adjustment for covariates including age, gender, and education. P values of < 0.05 are shown in bold.