Table 2. Prevalence of the Q134H(CAA>CAT) mutation.

A: MEAN PREVALENCE OF Q134H ALLELE REGION WISE
Region	Samples sequenced	Samples carrying 134H allele	Mean allele frequency	Bootstrap 95% CI
West	35	18	15.1	7.4, 25.4
Midwest	94	20	23.7	15.2, 33.4
South	92	26	16.6	11.8, 21.7
Northeast	93	34	12.6	9.2, 16.8
B:MEAN PREVALENCE OF Q134H ALLELE BY BREED SIZE
Breed size	Samples Sequenced	Samples carrying 134H allele	Mean allele frequency	Bootstrap 95% CI
Small	50	12	12.3	6.7, 19.1
Medium	150	36	17.6	12.7, 23.5
Large	80	38	11.0	8.7, 13.9
C: MEAN PREVALENCE OF Q134H ALLELE BY AGE OF THE DOG
Age category	Samples sequenced	Samples carrying 134H allele	Mean allele frequency	Bootstrap 95% CI
Puppies (A)	61	20	18.7	10.5, 28.0
Young Adults (B)	85	27	14.9	9.7, 20.7
Mature Adults (C)	32	13	12.6	7.8, 18.1
Seniors (D)	28	5	9.3	2.8, 20.2