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. Author manuscript; available in PMC: 2019 Sep 1.
Published in final edited form as: Ear Hear. 2018 Sep-Oct;39(5):863–873. doi: 10.1097/AUD.0000000000000542

Table 4.

DPOAE Level, noise floor and SNR normative database from infants with normal hearing.

0–4 mos Percentiles
1st 5th 10th 20th Median 80th 90th 95th 99th Mean Std Dev
f2 (kHz) DP Level (dB)
 1.00 −16.79 −7.51 −2.90 1.26 9.63 16.82 20.45 23.14 29.64 8.91 9.59
 1.50 −9.64 −2.51 1.04 6.00 13.90 19.18 21.45 23.05 27.65 12.61 7.89
 2.00 −9.50 −4.62 0.17 5.45 12.77 18.89 21.69 23.06 31.76 11.93 8.46
 3.00 −14.19 −3.44 −0.12 4.03 10.57 16.09 19.09 21.99 46.04 10.21 8.90
 4.00 −14.17 −3.98 0.90 6.61 14.01 20.43 25.20 41.12 55.38 14.65 12.32
 5.50 −15.35 −7.44 −1.71 3.22 12.13 17.85 20.51 22.79 26.57 10.61 9.28
 8.00 −23.52 −15.69 −9.20 −2.91 7.07 14.15 17.20 18.90 24.02 5.54 10.27
f2 (kHz) Noise (dB)
 1.00 −16.17 −9.06 −6.26 −2.62 6.00 14.93 18.60 21.59 29.64 6.03 9.60
 1.50 −13.85 −9.14 −6.26 −1.82 4.98 12.13 15.98 18.36 22.25 4.89 8.07
 2.00 −17.90 −11.77 −10.15 −7.83 −1.89 4.54 7.96 10.90 17.39 −1.65 7.21
 3.00 −17.86 −15.46 −13.51 −10.86 −6.95 −0.66 2.93 5.29 11.87 −5.81 6.31
 4.00 −21.33 −15.41 −13.47 −10.56 −7.39 −2.36 1.77 5.42 18.28 −6.46 6.77
 5.50 −26.08 −19.68 −15.33 −11.57 −7.68 −4.04 −0.02 2.59 26.57 −8.00 6.32
 8.00 −28.59 −24.44 −21.25 −17.70 −11.80 −7.37 −5.54 −0.93 24.02 −12.15 7.09
f2 (kHz) SNR (dB)
 1.00 <0 <0 <0 <0 2.63 9.03 13.17 18.04 22.25 4.68 5.76
 1.50 <0 <0 <0 0.16 6.96 16.59 20.23 23.22 30.97 8.80 8.01
 2.00 <0 <0 0.07 5.21 14.80 22.16 25.41 27.67 32.06 14.19 8.77
 3.00 <0 <0 1.90 8.10 18.98 22.99 26.06 29.62 37.45 16.29 8.89
 4.00 <0 2.13 8.82 14.34 21.13 27.73 31.91 38.33 52.52 21.27 9.97
 5.50 <0 3.25 7.18 11.57 19.96 24.64 27.43 29.89 34.94 18.70 7.80
 8.00 <0 0.97 6.20 11.02 19.61 23.94 26.78 28.39 34.68 17.94 7.87
5–15 Mos Percentiles
1st 5th 10th 20th Median 80th 90th 95th 99th Mean Std Dev
f2 (kHz) DP Level (dB)
 1.00 −12.36 −6.28 −2.73 2.41 11.76 18.50 22.09 25.69 51.84 11.15 10.73
 1.50 −15.12 −2.87 0.08 5.24 11.84 17.60 20.90 24.09 37.67 11.25 8.92
 2.00 −12.82 −4.45 −1.02 4.07 11.54 16.65 19.44 22.53 41.50 10.74 9.17
 3.00 −18.85 −6.31 −2.78 2.18 8.84 14.95 18.42 23.40 46.94 8.66 9.62
 4.00 −17.44 −8.40 −4.29 0.24 8.74 15.18 20.69 29.63 47.11 8.83 11.42
 5.50 −18.08 −11.02 −4.78 0.49 9.04 15.03 17.84 21.91 38.85 7.88 10.04
 8.00 −27.62 −15.98 −11.41 −6.87 4.31 12.45 15.64 19.02 22.88 3.02 10.90
f2 (kHz) Noise (dB)
 1.00 −16.82 −6.83 −2.65 0.83 9.42 16.83 19.94 23.33 29.17 8.96 9.35
 1.50 −14.10 −8.29 −5.02 −0.58 6.64 13.19 17.03 20.03 22.94 6.13 8.50
 2.00 −16.62 −10.23 −7.72 −5.93 1.76 8.60 11.97 16.86 21.20 1.87 7.90
 3.00 −19.12 −14.81 −12.46 −8.95 −2.94 3.35 7.04 8.87 19.62 −2.88 7.56
 4.00 −22.78 −18.65 −15.09 −11.86 −6.55 0.66 4.44 9.81 18.52 −5.47 8.18
 5.50 −26.88 −20.86 −17.07 −13.57 −8.44 −2.05 3.00 5.39 16.80 −7.89 8.15
 8.00 −29.44 −25.83 −22.66 −18.26 −12.11 −6.55 −1.85 2.57 13.77 −11.96 8.47
f2 (kHz) SNR (dB)
 1.00 <0 <0 <0 <0 1.35 8.08 12.39 17.66 34.56 4.39 6.71
 1.50 <0 <0 <0 <0 5.08 11.39 16.39 21.42 31.56 6.70 7.34
 2.00 <0 <0 <0 0.77 9.15 17.70 21.91 24.12 30.49 9.93 8.61
 3.00 <0 <0 <0 2.81 11.24 20.76 23.33 26.89 36.09 12.20 9.14
 4.00 <0 <0 0.10 5.87 15.42 21.71 24.85 30.03 36.75 14.69 9.10
 5.50 <0 <0 2.38 7.47 18.92 23.32 25.98 29.21 34.38 16.13 8.68
 8.00 <0 <0 0.41 5.10 18.62 22.79 25.31 27.37 32.30 15.43 9.01