TABLE 4.
Comparison of relapsed and nonrelapsed patients after medication
| Valuables | Nonrelapse (n = 10) | Relapse (n = 7) | p |
|---|---|---|---|
| Gender (n, %) | 1.000 | ||
| Male | 4 (40.0) | 3 (42.9) | |
| Female | 6 (60.0) | 4 (57.1) | |
| Age (mean ± SD, y) | 43.7 ± 11.7 | 59.4 ± 10.9 | 0.013 * |
| Duration of typewriter tinnitus (median [IQR], y) | 0.7 (0.5–1.3) | 1.0 (0.2–1.5) | 0.922 |
| Follow-up period (mean ± SD, mo) | 11.6 ± 6.1 | 17.6 ± 9.2 | 0.127 |
| Vertigo (n, %) | 0.304 | ||
| No | 5 (50.0) | 1 (14.3) | |
| Yes | 5 (50.0) | 6 (85.7) | |
| Neurovascular contact type (n, %) | |||
| Type I | 6 (60.0) | 3 (42.9) | 0.579 |
| Type II | 3 (30.0) | 3 (42.9) | |
| Type III | 0 (0.0) | 1 (14.2) | |
| None | 1 (10.0) | 0 (0.0) | |
| PTA (mean ± SD, dB HL) | 15.5 ± 6.0 | 32.5 ± 16.7 | 0.009 * |
| OVEMP (n, %) | 1.000 | ||
| Abnormal | 5 (50.0) | 3 (42.8) | |
| Normal | 3 (30.0) | 2 (28.6) | |
| Absent response | 2 (20.0) | 2 (28.6) | |
| CVEMP (n, %) | 1.000 | ||
| Abnormal | 5 (50.0) | 4 (57.1) | |
| Normal | 3 (30.0) | 1 (14.3) | |
| Absent response | 2 (20.0) | 2 (28.6) | |
| ABR of affected side | |||
| I wave latency (median [IQR], ms) | 1.7 (1.6–1.8) | 1.7 (1.6–1.7) | 0.784 |
| III wave latency (mean ± SD, ms) | 4.1 ± 0.2 | 4.3 ± 0.3 | 0.140 |
| V wave latency (mean ± SD, ms) | 5.8 ± 0.2 | 6.2 ± 0.2 | 0.018 * |
| IPL I-III (median [IQR], ms) | 2.3 (2.3–2.4) | 2.5 (2.4–2.8) | 0.004 * |
| IPL III-V (mean ± SD, ms) | 1.8 ± 0.2 | 1.9 ± 0.1 | 0.144 |
| IPL I-III ≥2.3 ms (n, %) | / | ||
| No | 0 (0.0) | 0 (0.0) | |
| Yes | 10 (100.0) | 7 (100.0) |
*
P<0.05.
ABR, auditory brainstem response; cVEMP, cervical vestibular evoked myogenic potential; IPL, interpeak latency; IQR, interquartile range; oVEMP, ocular vestibular evoked myogenic potential; PTA, pure-tone audiometry; SD, standard deviation.