Table 3.

Estimates of heritability of OCD under various treatments of the data.

Data	#Cases	#Controls	Heritability (SE)
All cases and controls	2090	1263	29%	(4%)
All cases and controls (based on 184296 SNPs after LD pruning)	2090	1263	28%	(4%)
Individuals with European ancestry	1831	4065	28%	(5%)
All third cousins or closer relatives removed	1822	3954	30%	(5%)
Ancestry-matched (1-to-1 fullmatch)	2090	2090	26%	(6%)
Ancestry and sex matched (1-to-1 fullmatch)	2090	2090	29%	(6%)
Ancestry-matched (1-to-1 fullmatch), European ancestry	1831	1831	23%	(7%)