Table 1. Prevalence of the F167Y(TTC>TAC) mutation.

A: MEAN PREVALENCE OF F167Y ALLELE REGION WISE
Region	Samples sequenced	Samples carrying 167Y allele	Mean allele frequency	Bootstrap 95% CI
West	35	27	72.8	62.4, 82.7
Midwest	94	44	52.7	42.9, 62.2
South	92	44	40.2	30.9, 48.6
Northeast	93	42	57.8	46.6, 68.3
B: MEAN PREVALENCE OF F167Y ALLELE BY BREED SIZE
Breed size	Samples sequenced	Samples carrying 167Y allele	Mean allele frequency	Bootstrap 95% CI
Small	50	18	45.5	29.2, 61.7
Medium	150	68	48.4	40.3, 56.3
Large	80	48	65.8	56.2, 74.7
C: MEAN PREVALENCE OF F167Y ALLELE BY AGE OF THE DOG
Age category	Samples sequenced	Samples carrying 167Y allele	Mean allele frequency	Bootstrap 95% CI
Puppies (A)	61	36	49.7	39.8, 60.5
Young Adults (B)	85	42	50.3	39.3, 61.5
Mature Adults (C)	32	12	65.1	41.7, 84.5
Seniors (D)	28	7	63.6	34.7, 88.6