Table 2. Comparison of mean and standard deviation of DPOAE levels (Ldp) and noise floor levels (Lnf) across times in noise group.
| Frequency (Hz) | DPOAE levels (Ldp) (dB) | Noise floor levels (Lnf) (dB) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Day 0 | Day 8 | Day 11 | p | Day 0 | Day 8 | Day 11 | p | |||
| 588.00 | 5.16 (0.08) | 0.58 (0.02) | 1.95 (0.10) | 0.013 | -5.11 (0.04) | -6.15 (0.08) | -6.73 (0.07) | 0.091 | ||
| 867.00 | 8.87 (0.12) | 3.24 (0.26) | 3.68 (0.23) | 0.001 | -6.68 (0.08) | -6.19 (0.10) | -6.06 (0.06) | 0.077 | ||
| 1133.00 | 13.08 (0.15) | 6.39 (0.27) | 6.85 (0.21) | 0.008 | -7.23 (0.06) | -6.63 (0.12) | -6.97 (0.05) | 0.179 | ||
| 1677.00 | 18.65 (0.32) | 11.27 (0.22) | 11.91 (0.35) | 0.022 | -7.04 (0.15) | -6.49 (0.11) | -7.75 (0.13) | 0.088 | ||
| 1967.00 | 23.14 (0.26) | 12.82 (0.38) | 14.63 (0.45) | 0.016 | -7.36 (0.17) | -8.96 (0.15) | -6.28 (0.17) | 0.452 | ||
| 3098.50 | 27.82 (0.38) | 15.72 (0.43) | 16.79 (0.29) | 0.031 | -8.32 (0.13) | -7.38 (0.16) | -8.56 (0.12) | 0.089 | ||
| 3956.00 | 31.18 (0.44) | 18.01 (0.50) | 19.10 (0.31) | 0.002 | -9.44 (0.12) | -8.21 (0.15) | -9.19 (0.16) | 0.057 | ||
| 5888.50 | 36.87 (0.53) | 19.08 (0.41) | 20.86 (0.35) | 0.011 | -9.23 (0.17) | -9.55 (0.13) | -8.88 (0.19) | 0.266 | ||
| 8166.50 | 34.96 (0.47) | 17.74 (0.27) | 19.28 (0.33) | 0.009 | -11.62 (0.18) | -10.77 (0.16) | -10.09 (0.17) | 0.085 | ||
| 9855.00 | 33.25 (0.39) | 17.04 (0.49) | 18.45 (0.41) | 0.010 | -11.04 (0.13) | -11.11 (0.15) | -12.71 (0.19) | 0.151 | ||