Table 4.
Frequency band | CF shift magnitude (octave) |
||||||||
---|---|---|---|---|---|---|---|---|---|
Up |
Down |
Up and down |
|||||||
Mean | SD | N | Mean | SD | N | Mean | SD | N | |
< 0.5 kHz | |||||||||
6 weeks | 1.90 | 1 | −0.48 | 0.23 | 2 | 0.96 | 0.84 | 3 | |
12 weeks | 0 | −0.34 | 1 | 0.34 | 1 | ||||
24 weeks | 0.64 | 1 | −0.40 | 1 | 0.52 | 0.16 | 2 | ||
0.5–1 kHz | |||||||||
6 weeks | 1.97 | 0.70 | 35 | −0.56 | 0.20 | 13 | 1.58 | 0.88 | 48 |
12 weeks | 1.46 | 0.47 | 36 | −0.44 | 0.18 | 19 | 1.11 | 0.63 | 55 |
24 weeks | 1.14 | 0.57 | 11 | −0.47 | 0.19 | 13 | 0.78 | 0.53 | 24 |
1–2 kHz | |||||||||
6 weeks | 1.35 | 0.49 | 43 | −0.37 | 0.11 | 6 | 1.23 | 0.56 | 49 |
12 weeks | 1.13 | 0.42 | 41 | −0.50 | 0.21 | 26 | 0.89 | 0.47 | 67 |
24 weeks | 1.00 | 0.18 | 8 | −0.44 | 0.21 | 32 | 0.56 | 0.30 | 40 |
2–4 kHz | |||||||||
6 weeks | 0.91 | 0.17 | 7 | −0.34 | 0.07 | 7 | 0.63 | 0.32 | 14 |
12 weeks | 1.00 | 0.31 | 13 | −0.28 | 0.01 | 3 | 0.87 | 0.41 | 16 |
24 weeks | 0.80 | 0.10 | 3 | −0.44 | 0.15 | 10 | 0.52 | 0.21 | 13 |
4–8 kHz | |||||||||
6 weeks | 0 | −0.35 | 0.06 | 4 | 0.35 | 0.06 | 4 | ||
12 weeks | 0 | −0.39 | 0.12 | 2 | 0.39 | 0.12 | 2 | ||
24 weeks | 0 | −0.61 | 0.24 | 3 | 0.61 | 0.24 | 3 | ||
>8 kHz | |||||||||
6 weeks | 0 | 0 | 0 | ||||||
12 weeks | 0 | 0 | 0 | ||||||
24 weeks | 0 | −0.59 | 1 | 0.59 | 1 | ||||
Group | |||||||||
6 weeks | 1.57 | 0.67 | 86 | −0.45 | 0.17 | 32 | 1.27 | 0.76 | 118 |
12 weeks | 1.25 | 0.46 | 90 | −0.46 | 0.19 | 51 | 0.96 | 0.54 | 141 |
24 weeks | 1.03 | 0.42 | 23 | −0.46 | 0.19 | 60 | 0.62 | 0.37 | 83 |
N, Sample size.