. Author manuscript; available in PMC: 2008 Jul 29.

Published in final edited form as: J Acoust Soc Am. 2007 Dec;122(6):3539–3553. doi: 10.1121/1.2799474

Table 3.

These data refer to the I/O-function approach to estimating DPOAE threshold. Shown here are the number of ears that did not meet the SNR and regression-based inclusion criteria, the percentage of these ears that have behavioral thresholds ≤ 30 dB HL, and the mean thresholds and standard deviations for these ears when f₂ = 2 and 4 kHz.

	f₂ = 2 kHz
Condition	No. not meeting SNR criterion	% with thresholds ≤ 30 dB HL	Mean threshold	Standard deviation
Control	10	10	49.5	9.6
Cm10	10	30	47	13.8
C0	10	10	46	13.3
Cp10	56	46	31.6	17.8

	No. not meeting Regression criteria	% with thresholds ≤ 30 dB HL	Mean threshold	Standard deviation
Control	78	88	13.8	14.5
Cm10	78	86	14.4	14.8
C0	64	88	14.5	16.3
Cp10	74	91	11.3	14.1

	f₂ = 4 kHz
Condition	No. not meeting SNR criterion	% with thresholds ≤ 30 dB HL	Mean threshold	Standard deviation
Control	4	25	52.5	15
Cm10	5	40	39	27.5
C0	10	20	46	20.8
Cp10	9	11	47.8	10.9

	No. not meeting Regression criteria	% with thresholds ≤ 30 dB HL	Mean threshold	Standard deviation
Control	45	53	26.3	23.7
Cm10	36	42	33.6	21.8
C0	48	58	25.4	22.1
Cp10	51	61	24.3	22.9