Two-way interaction analyses between SNPs and daily stressful life events in models of NA.

Sample I = Healthy control; Sample II = Twins from the general population; Sample III = Unaffected siblings of psychotic patients; Sample IV = Patients with psychotic disorder; Sample V = Patients with a history of a major depressive disorder currently displaying residual depressive symptoms. aRegression coefficient indicates changes in negative affect associated with changes in subjectively appraised stress, bnumber of subject per genotype, c95% confidence interval, dP-value for the interactive effect model.