Normal hearing

%

Uni-deaf

%

Bi-deaf

%

Total Tested

Total Tested

2105

75%

499

18%

206

7%

2810

Normal hearing

%

Uni-deaf

%

Bi-deaf

%

Total Tested

Females

1057

72%

290

20%

124

8%

1471

Males

1048

78%

209

16%

82

6%

1339

Normal hearing

%

Uni-deaf

Bi-deaf

%

Total Tested

2 brown eyes

1953

78%

392

16%

156

6%

2501

1 brown/1 blue

127

51%

84

34%

38

15%

249

2 blue eyes

25

42%

23

38%

12

20%

60

Normal hearing

%

Uni-deaf

Bi-deaf

%

Total Tested

Black spots

1852

75%

431

18%

178

7%

2461

Liver spots

252

73%

66

19%

27

8%

345

Normal hearing

%

Uni-deaf

Bi-deaf

%

Total Tested

No Patch

1749

72%

480

20%

194

8%

2423

Yes Patch

356

92%

19

5%

12

3%

387

Statistics from memo from T. R. Famula to Eva Berg dated December 8, 2003 in response to a request for current data from UC Davis.