Table 4.
Preoperative and postoperative SDS and SRT
| Preoperative | Postoperative | Improvement | pb | ||
|---|---|---|---|---|---|
| SDS (%) | Causse Loop Piston | 93.1±8.7* | 97.7±4.4 | 4.6±8.7 | <0.0001 |
| Big Easy Piston | 89.7±8.0 | 97.2±5.6 | 7.5±8.4 | <0.0001 | |
| p-valuea | 0.015 | _c | 0.041 | ||
| SRT (dB) | Causse Loop Piston | 50.1±11.9 | 18.3±10.7 | 31.8±12.8 | <0.0001 |
| Big Easy Piston | 47.7±8.8 | 24.0±9.1 | 23.7±11.2 | <0.0001 | |
| p-valuea | 0.167 | 0.001 | 0.0001 |
*
Values are expressed as mean ± standard deviation (SD)
a
Between group comparison.
b
Within group comparison (preoperative and postoperative).
c
The statistical analysis was not performed because preoperative SDS was not significant between the two groups.
SDS: speech discrimination score; SRT: speech reception threshold