Table 2.
Frequency | Group I (Mean ± SD) or (Min-Max) n = 60 Ears | Group II (Mean ± SD) or (Min-Max) n = 64 Ears | Control Group (Mean ± SD) or (Min-Max) n = 60 Ears | P | P (Post Hoc) | |
RF (Hz) | 755 (498-1406) | 761 ± 137.0 | 875 (447-2686) | .034 b | .531x
.047y .012z |
|
226 | APAR | 0.18 ± 0.06 | 0.17 ± 0.07 | 0.15 (0.06-0.38) | .275b | |
PPAR | 0.18 (0.07-0.46) | 0.17 (0.08-0.35 | 0.15 (0.06-0.34) | .225b | ||
500 | APAR | 0.37 (0.13-0.95) | 0.34 ± 0.13 | 0.34 ± 0.12 | .205b | |
PPAR | 0.41 ± 0.13 | 0.38 ± 0.12 | 0.36 ± 0.12 | .124a | ||
1000 | APAR | 0.65 ± 0.13 | 0.61 ± 0.15 | 0.64 ± 0.13 | .287a | |
PPAR | 0.72 (0.31-0.90) | 0.65 ± 0.14 | 0.68 ± 0.13 | .221b | ||
2000 | APAR | 0.66 ± 0.15 | 0.58 ± 0.18 | 0.63 (0.01-0.95) | .090b | |
PPAR | 0.65 ± 0.15 | 0.60 ± 0.16 | 0.63 (0.10-0.95) | .141b | ||
4000 | APAR | 0.45 ± 0.19 | 0.42 ± 0.18 | 0.54 ± 0.18 | .001a | .735x
.017y .001z |
PPAR | 0.45 ± 0.19 | 0.38 (0.09-0.95) | 0.54 ± 0.18 | <.001b | .652x
.023y <.001z |
|
8000 | APAR | 0.45 ± 0.18 | 0.47 ± 0.19 | 0.42 ± 0.14 | .187a | |
PPAR | 0.44 ± 0.18 | 0.47 ± 0.18 | 0.41 ± 0.14 | .117a | ||
Mean | APAR | 0.48 ± 0.09 | 0.45 ± 0.10 | 0.49 ± 0.07 | .023a | .079x
.920y .030z |
PPAR | 0.50 ± 0.09 | 0.47 ± 0.09 | 0.50 ± 0.07 | .185a |
aOne-way ANOVA; bKruskal–Wallis test; XGroup I-group II; YGroup I-control group; ZGroup II-control group.
RF, resonance frequancy; APAR, ambient pressure absorbance ratio; PPAR, peak pressure absorbance ratio; ANOVA, analysis of variance. Bold data indicates statistical significance.