Table 5 Association between age and referral rates in participants using TDH-39 supra-aural earphones and noise-cancelling headphones at 30 dB HL and 25 dB HL
From: Hearing screening for school children: utility of noise-cancelling headphones
Referral rates | No. of Refer (%) | χ 2 | p-value | |
|---|---|---|---|---|
| Â | TDH-39 | PXC-450 | Â | Â |
500 Hz Included | ||||
30 dB HL | ||||
 6 (n= 108) | 15.7% (17) | 3.7% (4) | N/A1 | 1 |
  7 (n=288) | 13.5% (39) | 3.5% (10) | ||
  8 (n=68) | 11.8% (8) | 1.5% (1) | ||
25 dB HL | ||||
 6 (n= 108) | 29.6% (32) | 15.7% (17) | 0.04 | 0.9802 |
  7 (n=288) | 26.0% (75) | 12.8% (37) | ||
  8 (n=68) | 29.4% (20) | 14.7% (10) | ||
500 Hz Excluded | ||||
30 dB HL | ||||
 6 (n= 108) | 1.9% (2) | 0.9% (1) | N/A1 | 0.6786 |
  7 (n=288) | 0.3% (1) | 1% (3) | ||
  8 (n=68) | 0% (0) | 1.5% (1) | ||
25 dB HL | ||||
 6 (n= 108) | 2.8% (3) | 2.8% (3) | N/A1 | 1 |
  7 (n=288) | 3.5% (10) | 4.3% (12) | ||
   (n=68) | 2.9% (2) | 2.9% (2) | ||