TABLE 2

Power to detect IBD: proportions of estimated probabilities of IBD greater than specified values for IBD tracts

Individual probabilitiesMaximum probabilities
IBD length (cM)>0.1>0.5>0.9>0.1>0.5>0.9
30 kb1.00.750.520.280.800.550.35
2.00.920.810.530.950.900.65
3 kb0.50.800.700.490.850.750.65
1.00.950.790.590.950.850.80
Chromosome 10.50.350.240.180.350.250.25
1.00.940.860.560.950.900.75
Chromosome 210.50.590.440.230.600.550.30
1.00.890.740.470.900.800.60
  • IBD probabilities were estimated for pairs of haplotypes containing IBD tracts. In addition to considering probabilities estimated at individual locations within the IBD tracts, the maximum estimated IBD probability in each region was noted. The proportions of estimated IBD probabilities taking values >0.1, 0.5, and 0.9 at individual locations (“Individual probabilities”) and maximized over the region (“Maximum probabilities”) are shown. The approximate genetic lengths of the IBD regions are given.