Appendix A:
Demographic information for CI users
| ID | Sex | Age at CI | Age at testing | Months' experience | SES | Etiology | CI type | Processing strategy |
| CI 1 | M | 2.58 | 17.83 | 183.00 | 5 | Meningitis | Nucleus 22 Sprint | MPEAK |
| CI 2 | F | 2.32 | 8.16 | 70.13 | 3 | Unknown | Nucleus 22 Sprint | ACE |
| CI 3 | F | 1.63 | 9.64 | 96.10 | 6 | Ushers | Nucleus 3G | ACE |
| CI 4 | M | 2.27 | 9.25 | 83.77 | 4 | Heredity, NS | Nucleus 22 Sprint | ACE |
| CI 5 | M | 2.74 | 14.06 | 135.90 | 6 | CNX 26 | Nucleus 22 Spectra | SPEAK |
| CI 6 | M | 2.88 | 16.04 | 158.03 | 3 | CNX 26 | Nucleus 22 Esprit | SPEAK |
| CI 7 | M | 3.39 | 16.73 | 160.07 | 4 | CNX 26 | Nucleus 22 Esprit | SPEAK |
| CI 8 | M | 1.74 | 7.89 | 73.73 | 3 | Unknown | Nucleus 22 Sprint | ACE |
| CI 9 | F | 1.59 | 8.71 | 85.43 | 6 | Unknown | Nucleus 3G | ACE |
| CI 10 | M | 3.57 | 15.94 | 148.53 | 4 | CNX 26 | Nucleus 22 Spectra | SPEAK |
| CI 11 | F | 6.24 | 13.30 | 84.70 | 4 | Heredity, NS | Nucleus 22 Sprint | ACE |
| CI 12 | M | 3.34 | 9.74 | 76.83 | 4 | Heredity, NS | Nucleus 3G | ACE |
| CI 13 | F | 10.54 | 15.43 | 58.63 | 4 | Unknown | Nucleus 3G | ACE |
| CI 14 | F | 3.36 | 9.44 | 72.93 | 4 | Unknown | Nucleus 22 Sprint | ACE |
| CI 15 | M | 4.27 | 8.23 | 47.50 | 4 | Unknown | Nucleus 3G | ACE |
| CI 16 | F | 3.53 | 15.92 | 148.70 | 5 | Unknown | Nucleus 22 Esprit | SPEAK |
| CI 17 | M | 1.64 | 8.53 | 82.70 | 3 | Ototoxic | Nucleus 3G | ACE |
| CI 18 | M | 1.48 | 8.43 | 83.40 | 4 | Meningitis | Nucleus 22 sprint | ACE |
| CI 20 | M | 5.68 | 12.81 | 85.63 | 4 | Unknown | Nucleus 3G | ACE |
| CI 21 | F | 2.27 | 8.25 | 71.73 | 5 | CMV infection | Nucleus 3G | ACE |
| CI 22 | M | 2.98 | 11.99 | 108.07 | 3 | Coch Mal | Nucleus 22 Sprint | ACE |
| CI 23 | F | 1.61 | 8.06 | 77.43 | 5 | Unknown | Nucleus 3G | ACE |
| CI 24 | M | 2.60 | 10.59 | 95.93 | 5 | Heredity, NS | Nucleus 22 Sprint | ACE |
| CI 25 | M | 1.69 | 7.19 | 66.07 | 5 | Unknown | Nucleus 22 Sprint | ACE |
| CI 26 | F | 10.99 | 15.13 | 49.77 | 4 | Unknown | Nucleus 3G | ACE |
| CI 27 | M | 3.82 | 16.89 | 156.87 | 5 | Meningitis | Nucleus 22 Esprit | SPEAK |
| CI 28 | M | 3.53 | 11.85 | 99.87 | 3 | Coch Mal | Nucleus 3G | ACE |
| CI 29 | F | 2.34 | 11.40 | 108.73 | 3 | Heredity, NS | Nucleus 3G | ACE |
| Average | 3.55 | 11.88 | 99.97 | 4.24 | ||||
| SD | 2.39 | 3.50 | 36.80 | 0.95 |
Note. CI = cochlear implants; CNX 26 = GJBT mutation (Connexin 26); CMV = cytomegalovirus; Coch Mal = cochlear malformation; F = female; Heredity, NS = nonspecific hereditary component; M = male; SES = socioeconomic status.