Table 6. Gene-gene interaction models contribution to BA risk by GMDR analysis.

Number of factors	Best model a	Training accuracy	Testing accuracy	CVC	Chi2	P value	OR(95% CI)
1	rs17095355	0.5663	0.5637	10/10	10.4962	0.0012	1.89(1.28-2.78)
2	rs7577243-rs17095355	0.5782	0.5216	6/10	12.8256	0.0003	1.94(1.35-2.79)
3	rs11125609-rs7577243-rs17095355	0.6072	0.5713	10/10	23.2364	<0.0001	2.41(1.68-3.46)

a. The best model was referred to as the one with the maximum testing accuracy and maximum cross-validation consistency (CVC). GMDR: generalized multifactor dimensionality reduction; OR: odds ratio; CI: confidence interval. Rs17095355, rs7577243 and rs11125609 were on ADD3, GPC1 and EFEMP1, respectively.