Table AII.

Percentage of X chromosome SNP pairs^a showing no evidence of recombination (D′ = 1), perfect LD (r² = 1), or where useful LD is observed (r²≥0.8)

	D′ = 1		r2 = 1		r2 ≥ 0.8
Inter-SNP distance (kb)	OOA	CEU	OOA	CEU	OOA	CEU
≤10	88	85	39	35	51	49
10–20	72	64	23	19	34	31
20–50	60	48	12	9	21	18
50–100	44	31	6	3	11	10
100–200	31	19	3	1	6	4
200–500	22	11	1	0	2	1
500–1,000	18	7	0	0	0	0
1,000–2,000	17	7	0	0	0	0
2,000–5,000	15	7	0	0	0	0
5,000–10,000	13	7	0	0	0	0

OOA, Old Order Amish (n = 60); CEU, US Utah residents from HapMap (n = 60).

^aRestricted to SNPs with minor allele frequency ≥0.05 in both samples (n = 5,516).