Table 5 Sound amplitudes produced by parallel and perpendicular placement of 512Hz fork at the selected frequencies
From: Rinne test: does the tuning fork position affect the sound amplitude at the ear?
Frequency Measured | Mean Amplitude (±SD) | Mean Difference (95 % CI) | p-value | |
|---|---|---|---|---|
Parallel (N = 150) | Perpendicular (N =150) | |||
500 Hz | 90.04 dB (±4.46 dB) | 87.53 dB (±5.63 dB) | 2.50 dB (±1.15 dB) | <0.0001 |
1 kHz | 57.86 dB (±7.64 dB) | 52.92 dB (±8.50 dB) | 4.94 dB (±1.84 dB) | <0.0001 |
3.15 kHz | 64.76 dB (±7.32 dB) | 61.05 dB (±10.69 dB) | 3.70 dB (±2.08 dB) | .001 |