Skip to main content

Table 2 The subjects' speech intelligibility with and without HPDs at S/N =  + 5

From: The effect of hearing protection devices on speech intelligibility of Persian employees

HPDs types

With HPDs (%)

Without HPDs (%)

p value

Difference (%)

Earplug A1

74.13 ± 4.40

72.00 ± 2.70

0.15

2.13

Earplug A2

72.80 ± 2.10

72.00 ± 2.70

0.71

0.80

Earplug A3

72.10 ± 1.10

72.00 ± 2.70

0.70

0.10

Earmuff B1

73.87 ± 5.60

72.00 ± 2.70

0.10

1.87

Earmuff B2

72.00 ± 5.20

72.00 ± 2.70

0.41

0.00

Earmuff B3

72.00 ± 2.20

72.00 ± 2.70

0.90

0.00

Prototype earplug

75.60 ± 3.60

72.00 ± 2.70

0.10

3.60