Table 2.
Demographic and clinical characteristic at baseline
| Treatment | Placebo | p-value | |
|---|---|---|---|
| Mean (SD) | Mean (SD) | ||
| Number | 50 | 50 | |
| Age (years) | 47.68 (9.94) | 47.13 (11.70) | .737 |
| Gender (f/m) | 17/33 | 16/34 | .834 |
| Hearing loss (dB)a | 41.10 (20.26) | 44.60 (21.54) | .405 |
| Tinnitus frequency (Hz)b | 5406 (1731) | 5458 (1519) | .921 |
| tinnitus pitch SD (Hz)b | 1341 (1202) | 1333 (1181) | .855 |
| Time since tinnitus onset (years) | 7.03 (7.25) | 8.95 (6.80) | .175 |
| THQ total score | 24.95 (16.92) | 28.51 (16.41) | .288 |
| THQ emotional and cognitive distress | 20.95 (19.61) | 22.85 (20.20) | .635 |
| VAS total score | 42.83 (21.71) | 44.71 (19.28) | .647 |
| VAS loudness | 50.70 (23.19) | 48.86 (22.23) | .686 |
| VAS handicap | 28.58 (22.26) | 31.36 (22.30) | .534 |
| VAS annoyance | 39.70 (26.18) | 40.32 (22.27) | .899 |
| VAS awareness | 52.32 (24.58) | 58.30 (21.57) | .199 |
| THI | 24.10 (14.96) | 26.96 (16.92) | .373 |
| TQ | 19.12 (10,62) | 25.28 (13.82) | .014 |
| ADSL | 7.80 (6.29) | 9.38 (7.27) | .248 |
| SCL-90-R | 0.29 (0.28) | 0.36 (0.34) | .218 |
| GüF | 8.62 (5.59) | 10.58 (7.43) | .139 |
m = male, f = female, Hz = Hertz, dB = decibel, Tinnitus pitch SD = standard deviation of ten tinnitus pitch measurements before training
amaximum hearing loss in a frequency range ½ of an octave above and below the individual tinnitus frequency; bCent values retransformed into Hz to allow better interpretation