Table 1.

Distribution of relative pairs by category in the VAGES families^a

Relative pair	Relationship coefficientb	No. of pairs
Parent-offspring	0.5000	504
Sibs	0.5000	1,168
Grandparent-grandchild	0.2500	21
Avuncular	0.2500	210
Half-sibs	0.2500	53
Grand avuncular	0.1250	6
Half-avuncular	0.1250	.15
First cousins	0.1250	24
First cousins, once removed	0.0625	1
Total		2,002

^aThe total data used for the present study were obtained from 1,089 individuals distributed across 266 families.

^bThe relationship coefficient is 2 × coefficient of kinship of two individuals.