INT statistics under selected unstratified Lod scores values.

For each situation (Epistasis and Heterogeneity) and each model (DD/D+D, DR/D+R, RD/R+D and RR/R+R) the percentage of positive INT statistics (% pos INT) are shown. Also shown are the corresponding INT means (±sd) when the unstratified (Unstr) Lod scores satisfy the selected row's condition. LD between marker 4 and disease locus A was set to 1 and marker 4 allele frequency was matched to disease locus A allele frequency.