Table 2.
Participant Characteristics by Tinnitus Group
| Tinnitus | ||
|---|---|---|
| No | Yes | |
| Total participants | 59 | 15 |
| Number of males | 22 | 13 |
| Age in years | 26.7 (4.5) | 26.3 (2.1) |
| PTA | 7.2 (3.9) | 11.4 (5.6) |
| High frequency PTA (3, 4, & 6 kHz) | 3.2 (4.5) | 10.1 (4.4) |
| Extended high frequency PTA | 3.6 (9.2) | 4.2 (6.6) |
| ABR wave I amplitude (μV) – 1 kHz | 0.15 (0.10) | 0.10 (0.06) |
| ABR wave I amplitude (μV) – 3 kHz | 0.28 (0.12) | 0.21 (0.09) |
| ABR wave I amplitude (μV) – 4 kHz | 0.38 (0.11) | 0.29 (0.10) |
| ABR wave I amplitude (μV) – 6 kHz | 0.38 (0.11) | 0.32 (0.08) |
| DPOAE average level from 3–8 kHz | 5.38 (3.7) | 1.9 (2.3) |
Overview of participant characteristics by tinnitus group. Except for “total participants” and “number of males”, all values are group means with standard deviations in parentheses. The pure tone average (PTA) is the average of the pure tone thresholds at 0.5, 1, and 2 kHz (in dB HL), while the high frequency PTA consists of the thresholds at 3, 4, and 6 kHz, and the extended high frequency PTA is the average of all pure tone thresholds from 9–16 kHz. Auditory brainstem response (ABR) wave I amplitude is reported for 110 dB p-pe SPL tonebursts. DPOAE average level for a DP-gram is reported in dB SPL.