Table 1.
Clinicopathological characteristics of 219 patients with ISSNHL.
| Characteristics | N = 219 (%) |
|---|---|
| Gender | |
| Male | 104 (47.4) |
| Female | 115 (52.6) |
| NAC | |
| Yes | 94 (42.9) |
| No | 125 (57.1) |
| Side | |
| Left | 110 (50.3) |
| Right | 109 (49.7) |
| Age, yr ± SD | 47.7 ± 16.5 |
| <18 yr | 12 (5.4) |
| 18–65 yr | 168 (76.8) |
| >65 yr | 39 (17.8) |
| Duration of onset of hearing loss, d ± SD | 2.3 ± 0.7 |
| Underlying diseases | |
| Hypertension | 41 (18.7) |
| Coronary artery disease | 14 (6.3) |
| CRP, mg/L ± SD | 1.4 ± 1.7 |
| Unaffected ears | |
| 250 Hz, dB ± SD | 16.7 ± 14.0 |
| 500 Hz, dB ± SD | 17.0 ± 11.3 |
| 1k Hz, dB ± SD | 19.7 ± 12.2 |
| 2k Hz, dB ± SD | 20.9 ± 15.6 |
| 4k Hz, dB ± SD | 23.1 ± 22.4 |
| 8k Hz, dB ± SD | 25.1 ± 24.9 |
| Mean hearing level, dB ± SD | 20.4 ± 15.3 |
| Tympanometry type A | 219 (100.0) |
| Tympanometry type B | 0 (0.0) |
| Tympanometry type C | 0 (0.0) |
| SRT, dB ± SD | 17.1 ± 11.2 |
| SDS, % ± SD | 97.0 ± 9.5 |
| Pretreatment of affected ears | |
| 250 Hz, dB ± SD | 70.9 ± 23.2 |
| 500 Hz, dB ± SD | 76.9 ± 21.3 |
| 1k Hz, dB ± SD | 80.3 ± 20.6 |
| 2k Hz, dB ± SD | 75.9 ± 23.4 |
| 4k Hz, dB ± SD | 79.7 ± 23.8 |
| 8k Hz, dB ± SD | 80.3 ± 22.6 |
| Mean hearing level, dB ± SD | 77.3 ± 19.3 |
| Tympanometry type A | 214 (97.7) |
| Tympanometry type B | 5 (2.3) |
| Tympanometry type C | 0 (0.0) |
| SRT, dB ± SD | 73.6 ± 24.6 |
| SDS, % ± SD | 44.6 ± 19.8 |
| Posttreatment PTA of affected ears | |
| 250 Hz, dB ± SD | 38.2 ± 24.6 |
| 500 Hz, dB ± SD | 42.2 ± 25.1 |
| 1k Hz, dB ± SD | 52.5 ± 26.3 |
| 2k Hz, dB ± SD | 54.2 ± 26.7 |
| 4k Hz, dB ± SD | 56.2 ± 29.3 |
| 8k Hz, dB ± SD | 58.0 ± 30.4 |
| Mean hearing level, dB ± SD | 50.2 ± 23.1 |
| Tympanometry type A | 219 (100.0) |
| Tympanometry type B | 0 (0.0) |
| Tympanometry type C | 0 (0.0) |
| SRT, dB ± SD | 51.5 ± 28.0 |
| SDS, % ± SD | 68.8 ± 28.1 |
| Mean hearing level gain, dB ± SD | 27.1 ± 22.0 |
| SRT gain, dB ± SD | 22.0 ± 33.4 |
| SDS gain, % ± SD | 24.2 ± 30.3 |
CRP = C-reactive protein, ISSNHL = idiopathic sudden sensorineural hearing loss, mean hearing level = average pure tone audiometry (PTA) at 500, 1k, 2k, and 4k Hz, N = numbers, NAC = N-acetylcysteine, SD = standard deviation, SDS = speech discrimination score, SRT = speech reception threshold.