Copyright
©The Author(s) 2015.
World J Otorhinolaryngol. May 28, 2015; 5(2): 41-43
Published online May 28, 2015. doi: 10.5319/wjo.v5.i2.41
Published online May 28, 2015. doi: 10.5319/wjo.v5.i2.41
Table 2 Final grades of initial grade 4 cases in five nationwide sudden sensorineural hearing loss surveys in Japan n (%)
| 1972 | 1987 | 1993 | 2001 | 2012 | |
| Grade 1 | 26 (14) | 49 (18) | 70 (18) | 25 (15) | 5 (21) |
| Grade 2 | 31 (16) | 44 (17) | 62 (16) | 36 (22) | 1 (4) |
| Grade 3 | 87 (46) | 119 (45) | 173 (43) | 68 (41) | 11 (46) |
| Grade 4 | 45 (24) | 53 (20) | 95 (24) | 38 (23) | 7 (29) |
| Total | 189 (100) | 265 (100) | 400 (100) | 167 (100) | 24 (100) |
- Citation: Nakashima T. Diagnosis and treatment of sudden sensorineural hearing loss. World J Otorhinolaryngol 2015; 5(2): 41-43
- URL: https://www.wjgnet.com/2218-6247/full/v5/i2/41.htm
- DOI: https://dx.doi.org/10.5319/wjo.v5.i2.41