Table 2

Audiological outcomes

Preoperative3 monthsMean difference
(95% CI)
P valuePreoperative12 monthsMean difference
(95% CI)
P value
Pure tone average(n=144)(n=144)(n=101)(n=101)
Better ear95.53±20.6834.14±13.9361.39 (57.39 to 65.40)<0.001*96.10±22.0531.87±12.7164.23 (59.81 to 68.65)<0.001*
SRT(n=58)(n=58)(n=53)(n=53)
Better ear86.72±24.1137.47±17.0049.26 (42.28 to 56.24)<0.001*90.42±21.4734.45±11.5455.96 (49.50 to 62.42)<0.001*
Speech discrimination score(n=39)(n=39)(n=34)(n=34)
Better ear28.82±34.8347.33±32.92−18.51 (−27.13 to −9.90)<0.001*29.76±35.3962.24±28.51−32.47 (−43.00 to −21.94)<0.001*
CAP score(n=147)(n=147)(n=118)(n=118)
0.54±1.032.62±2.32−2.08 (−2.45 to −1.71)<0.001*0.57±1.093.97±2.57−3.40 (−3.88 to −2.92)<0.001*
  • *Statistically significance.

  • †paired t-test.

  • CAP, categories of auditory performance; ; SRT, speech recognition threshold.