Table 6 Comparison of the overall pass and referral rates between TDH-39 supra-aural earphones and Sennheiser PXC450 noise-cancelling headphones before and after excluding screening results at 500 Hz at 30 dB HL and 25 dB HL
From: Hearing screening for school children: utility of noise-cancelling headphones
No. of ears (n=464) | No. of pass (%) | No. of refer (%) | Observed agreement | Kappa | χ 2 | p-value | Odds ratio | ||
|---|---|---|---|---|---|---|---|---|---|
TDH-39 | PXC-450 | TDH-39 | PXC-450 | ||||||
Before excluding 500 Hz | |||||||||
30 dB HL | 404 (87.1%) | 449 (96.8%) | 60 (12.9%) | 15 (3.2%) | 0.864 | 0.1142 | N/A1 | 0.0072 | 5.88 |
25 dB HL | 333 (71.8%) | 400 (86.2%) | 131 (28.2%) | 64 (13.8%) | 0.735 | 0.2257 | 28.76 | < 0.0001 | 4.13 |
After excluding 500 Hz | |||||||||
30 dB HL | 461 (99.4%) | 459 (98.9%) | 3 (0.6%) | 5 (1.1%) | 0.991 | 0.4959 | N/A1 | 0.0003 | 305.33 |
25 dB HL | 449 (96.8%) | 446 (96.1%) | 15 (3.2%) | 18 (3.9%) | 0.946 | 0.2147 | N/A1 | 0.0017 | 11.30 |