Table 1 The subjects' speech intelligibility with and without HPDs at S/N = 0
From: The effect of hearing protection devices on speech intelligibility of Persian employees
HPDs types | With HPDs (%) | Without HPDs (%) | p value | Difference (%) |
|---|---|---|---|---|
Earplug A1 | 63.20 ± 1.30 | 62.93 ± 2.90 | 0.71 | 0.27 |
Earplug A2 | 63.47 ± 6.30 | 62.93 ± 2.90 | 0.86 | 0.54 |
Earplug A3 | 63.98 ± 4.80 | 62.93 ± 2.90 | 0.88 | 1.05 |
Earmuff B1 | 64.00 ± 3.70 | 62.93 ± 2.90 | 0.64 | 1.07 |
Earmuff B2 | 72.00 ± 2.40 | 62.93 ± 2.90 | 0.58 | 9.07 |
Earmuff B3 | 72.00 ± 3.40 | 62.93 ± 2.90 | 0.13 | 9.07 |
Prototype earplug | 84.20 ± 3.50 | 62.93 ± 2.90 | 0.04 | 21.27 |