Table 1 Characteristics of the 12,778 subjects who participated in follow-up interviews
Characteristic | Number (%) |
---|---|
All | 12,778 (100) |
Sex | |
  Male | 6,920 (54.2) |
  Female | 5,703 (44.6) |
  Unspecified | 155 (1.2) |
Age at follow-up (in months) | |
  2 | 453 (3.5) |
  3–5 | 5,031 (39.4) |
  6–11 | 4,611 (36.1) |
  12–17 | 2,303 (18.0) |
  18–23 | 91 (0.7) |
  >24a | 289 (2.3) |
Risk factorsb | |
  None | 11,108 (86.9) |
  NICU | 1,177 (9.2) |
  Family history of early-onset hearing lossc | 491 (3.8) |
  Family history with ototoxic medications | 57 (0.4) |
  Consanguinity | 5 (<0.1) |
  Ototoxic medications during pregnancy | 2 (<0.1) |
  Neonatal bacterial meningitisd | 1 (<0.1) |