Table 2. GMDR analysis gene–environmental interactions in recurrent MDD patients and controls.

No of factors considered	Best combination	Prediction error	Cross-validation consistency	P-value
2	Negative life event, rs242939	0.4017	10	0.023
4	Negative life event    rs1876828, rs242939, 242941	0.4367	6	0.037

aBold numerals p-values after Bonferroni correction.