Table 4.

Summary of Collected Data from 8 Projects and 646,558 Genotypes Assessed in 2005

	Project Identification No.								Total
	1	2	3	4	5	6	7	8
No. of subjects	1,080	930	1,830	2,489	1,628	1,776	2,907	1,400	14,040
No. of SNPs per subject	98–115	37–46	15–19	13–17	15	9–18	34–44	1–9	283
No. of genotypes	258,517	79,646	36,480	41,999	36,483	41,216	130,383	21,834	646,558
No. of measured person-SNPsa	114,464	37,695	33,590	40,085	24,426	25,794	112,003	10,917	398,974
No. of all doubles (% of person-SNPs)	90,162 (78.77)	17,732 (47.04)	2,787 (8.30)	1,914 (4.77)	5,696 (23.32)	14,260 (55.28)	16,986 (15.17)	10,917 (100)	160,454 (40.22)
No. of SNPs with routine doublesb	111	37	19	17	14	18	37	9	262
No. of routine doubles (% of person-SNPs)	33,262 (29.06)	4,347 (11.53)	2,787 (8.30)	1,914 (4.77)	2,960 (12.12)	590 (2.29)	13,762 (12.29)	10,917 (100)	70,539 (17.68)
No. of routine doubles (% of person-SNPs) without missing genotypes and with 3 genotype values present	26,832 (23.44)	3,199 (8.49)	2,664 (7.93)	1,188 (2.96)	1,980 (8.11)	241 (0.93)	11,957 (10.68)	9,744 (89.26)	57,805 (14.49)

Abbreviation: SNP, single nucleotide polymorphism.

^a“Person-SNPs” = product of the number of persons and the number of SNPs.

^b“Doubles” = double genotypes (i.e., pairs of 2 genotype measurements on the same subject and the same SNP).