Table 2.
Demographic Information
| Study | Number of subjects (male) | Age of subjects (std) | Mean Tinnitus Severity & questionnaire (std) | Hearing loss in subjects | Laterality of tinnitus | Number of controls (males) | Mean age of controls (std) |
|---|---|---|---|---|---|---|---|
| Allan et al. | 73 (43) | 58.3 (12.41) | THI and THQ but no data scores | Yes | 55 | 56.9 (16.39) | |
| Boyen et al. | 31 (20) | 56 (9) | 29 (20) THI | Yes | 22 bilateral | 24 (16) | 58 (6) |
| Husain et al. | 8 (8) | 56.13 (7.04) | 17.25 (5.01) THI | Yes | All bilateral | 11 (7) | 48.09 (10.42) |
| Krick et al. | 20 (11) 22 (13) |
43.9 (10.4) 42.6 (11.50) |
38.5 (15.4) 36.2 (16.8) |
Only moderate hearing loss less than 40 dB | 10 bilateral | 20 | NA |
| Landgrebe et al. | 28 (15) | 32.3 (9.4) | 32.9 (13.9) Goebel and Hiller questionnaire | No | 20 bilateral | 28 (15) | 31.2 (9.5) |
| Leaver et al. (2011) | 11 (5) | 44.4 (16) | THI (modified) | Yes | 7 bilateral | 21 (5) | 23 (3.3) |
| Leaver et al. (2012) | 23 (12) | 47.4 (2.9) | THI but no data scores | Yes | 21 (8) | 49 (2.6) | |
| Mahoney et al. | 7 (4) | 61.5 (5.1) | 42 THI only from two patients | Yes | 36 (20) | 60.2 (5.9) and 66 (7.9) | |
| Melcher et al. | 24 (12) | 46.9 (8.3) | TQR but no mean scores | No | 24 (12) | 45.8 (7.6) | |
| Mühlau et al. | 28 (13) | 40 | 25 (16) tinnitus-fragebogen | No | All bilateral | 28 (13) | 39 (−) |
| Schecklmann et al. (2012) | 44 (30) | 45 (13) | 35 (16) TQ | Unclear-patients with conductive hearing loss were excluded | 25 bilateral | None | NA |
| Schecklmann et al. (2013) | 257 (184) | 50 (12) | 39 (17) TQ | Yes | 182 bilateral | None | NA |
| Vanneste et al. | 154 (102) | 50.24 (14.28) | 36.02 (16.32) TQ | Yes | 110 bilateral | None | NA |