Table 3.

Normalized Sibship Statistics, for Two Affected Siblings

	Normalized Coefficientfor Configuration
Statistic	1 (2 IBD)	2 (1 IBD)	3 (0 IBD)
R criteriona	1.41	.00	−1.41
S+L B	.58	.58	−1.73
S-#geno	1.73	−.58	−.58
F+S	1.67	−.33	−1.00
ldom(.1)	1.14	.23	−1.61
ldom(.01)	.86	.42	−1.70

^aFor two siblings, the R criterion, the N criterion, S_pairs, S+L C, S_robdom, and S_all are all equivalent.