Table 1.
Characteristics of the study cohorta.
| Characteristic | No. (%) |
|---|---|
| All | 92 (100) |
| Sex | |
| Male | 54 (59) |
| Female | 38 (41) |
| Family history | |
| Yes | 17 (18) |
| No | 75 (82) |
| Onset | |
| Prelingual (≤ 3 years) | 80 (87) |
| Post-lingual (> 3 years) | 12 (13) |
| Laterality | |
| Bilateral symmetric | 69 (75) |
| Bilateral asymmetric | 17 (18) |
| No record | 6 (7) |
| Stability | |
| Stable | 58 (63) |
| Fluctuating | 24 (26) |
| No record | 10 (11) |
| Aminoglycoside Exposure | |
| Yes | 4 (4) |
| No | 63 (68) |
| Uncertain | 25 (27) |
| Severityb | |
| Mild | 1 (1) |
| Moderate | 9 (10) |
| Severe | 20 (22) |
| Profound | 57 (62) |
| No record | 5 (5) |
| Rehabilitation | |
| Hearing aid | 41 (45) |
| Cochlear Implantation | 17 (18) |
| Both | 22 (24) |
| Not applied | 12 (13) |
| Newborn hearing screening result | |
| Pass | 16 (17) |
| Referral | 36 (39) |
| Not applied/No record | 40 (43) |
aAll members in this cohort have bilateral hearing loss; the precise type of hearing loss are not always recorded, most recorded cases are sensorineural; bSeverity is determined by the hearing level of the better ear; WHO grading rule is adopted (Mild: 26–40 dB; Moderate: 41–60 dB; Severe: 61–80 dB; Profound: > 80 dB).