Table 4.

Comparison of mean wave V threshold for air conduction (AC) and bone conduction (BC) for the current study and Vander Werff et al. (2009). Standard deviations are in parentheses. All threshold values are expressed in dB nHL.

AC thresholds (dB nHL)	Current Study	Vander Werff et al. (2009)	t value	p-value
*500 Hz*
Mean (SD)	17.2 (14.0)	26.8 (8.3)	−3.98	<0.0001^*
95% CI around mean	14.2-20.2	24.1-29.4
Median (5^th-95^th percentile)	20 (0-40)	30 (20-40)		0.0002^*
*2000 Hz*
Mean (SD)	7.3 (10.4)	13.8 (6.3)	−4.38	<0.0001^*
95% CI around mean	5.2-9.5	11.7-15.8
Median (5^th-95^th percentile)	0 (0-30)	10 (0-20)		<0.0001^*
*4000 Hz*
Mean (SD)	7.0 (7.7)	11.7 (6.5)	−3.11	0.002^*
95% CI around mean	5.8-8.2	9.2-14.1
Median (5^th-95^th percentile)	10 (0-20)	10 (0-20)		0.0007^*

BC thresholds (dB nHL)	Current Study	Vander Werff et al. (2009)	t value	p-value
*500 Hz*
Mean (SD)	14.4 (9.1)	11.3 (7.9)	1.79	0.08
95% CI around mean	12.1-16.6	8.7-13.8
Median (5^th-95^th percentile)	10 (10-30)	10 (0-30)		0.15
*2000 Hz*
Mean (SD)	12.9 (6.4)	17.4 (7.2)	−3.32	0.001^*
95% CI around mean	11.3-14.5	15.1-19.8
Median (5^th-95^th percentile)	10 (10-30)	20 (10-30)		0.0001^*

Statistically significant