Table 1.

Summary information for the genotyped and the final sample of horses

	Genotyped Horses	Final GWA Horses
	N	N
Sex
Intact males	70	62
Females	271	247
Geldings	320	304
Country of birth
Norway	360	312
Sweden	301	301
Year of birth
2000	45	36
2001	73	66
2002	84	80
2003	69	64
2004	56	49
2005	62	55
2006	70	67
2007	71	70
2008	63	59
2009	68	67
Total	661	613

GWA Genome-wide association