Demographic characteristics, hearing, and surgical factors in study patients.

N.S. denotes not significant. * denotes P<0.05. 1. Measured with a standard 50-item phonemically balanced word list 2 Measured with a 10-grade scale where 10 represent the best possible hearing quality. Numbers are medians and ranges. 3. Measured with a 10-grade scale where 10 represents very disturbing tinnitus or dizziness. Numbers are medians and ranges. 4 As reported by the surgeon performing the operation. 5 Reported by physician after examining the patient on the evening after the operation. Demographic characteristics, hearing, and surgical factors in study patients.