Frequency

N

Not diagnosed

mild

moderate

severe

n

%

χ2

P

n

%

χ2

P

n

%

χ2

P

n

%

χ2

P

Speech

168

60

35.71

-

-

84

50.00

-

-

15

8.93

-

-

9

5.36

-

-

3 kHz

168

45

26.79

3.117

0.077

94

55.95

1.195

0.274

19

11.31

0.524

0.469

10

5.95

0.056

0.813

4 kHz

168

33

19.64

10.835

0.001

106

63.10

5.862

0.015

18

10.71

0.302

0.582

11

6.55

0.213

0.645

6 kHz

168

34

20.24

9.985

0.002

104

61.90

4.830

0.028

20

11.90

0.797

0.372

10

5.95

0.056

0.813

3 kHz + 4 kHz

168

39

23.21

6.315

0.012

101

60.12

3.476

0.062

18

10.71

0.302

0.582

10

5.95

0.056

0.813

3 kHz + 6 kHz

168

39

23.21

6.315

0.012

99

58.93

2.700

0.100

20

11.90

0.797

0.372

10

5.95

0.056

0.813

4 kHz + 6 kHz

168

34

20.24

9.985

0.002

106

63.10

5.862

0.015

18

10.71

0.302

0.582

10

5.95

0.056

0.813

3 kHz + 4 kHz + 6 kHz

168

37

22.02

7.667

0.002

102

60.71

3.902

0.048

19

11.31

0.524

0.469

10

5.95

0.056

0.813