Table 1. Childhood Development After Cochlear Implantation Study Demographics for Wave 3.
| Characteristic | No. (%) | Standardized mean difference | ||
|---|---|---|---|---|
| Full cohort (n = 136) | Earlier implantation (n = 45) | Later implantation (n = 91) | ||
| Age at beginning of wave 3, mean (SD), y | 11.47 (1.27) | 10.27 (0.30) | 12.03 (1.15) | 2.11 |
| Sex | ||||
| Female | 75 (55) | 22 (49) | 53 (58) | 0.19 |
| Male | 61 (45) | 23 (51) | 38 (42) | |
| Race and ethnicity | ||||
| Asian | 6 (4) | 0 | 6 (7) | 0.57 |
| Black | 11 (8) | 2 (4) | 9 (10) | |
| Hispanic White | 13 (10) | 3 (7) | 10 (11) | |
| Hispanic (race unspecified) | 7 (5) | 1 (2) | 6 (7) | |
| Non-Hispanic White | 93 (68) | 36 (80) | 57 (63) | |
| Othera/mixed | 6 (4) | 3 (7) | 3 (3) | |
| Income <$50 000 | 50 (37) | 11 (24) | 39 (43) | 0.40 |
| Less than high school education | 27 (20) | 8 (18) | 19 (21) | 0.08 |
| Onset age, mean (SD), y | 0.17 (0.47) | 0.03 (0.12) | 0.24 (0.56) | 0.52 |
| Amplification age, mean (SD), y | 1.00 (0.81) | 0.39 (0.26) | 1.29 (0.82) | 1.48 |
| Activation age, mean (SD), y | 2.37 (1.22) | 1.16 (0.19) | 2.96 (1.07) | 2.35 |
| Onset type | ||||
| Congenital | 79 (58) | 40 (89) | 39 (43) | 1.18 |
| Progressive | 43 (32) | 3 (7) | 40 (44) | |
| Sudden | 7 (5) | 2 (4) | 5 (6) | |
| Unknown | 7 (5) | 0 | 7 (8) | |
a
Participants who did not identify with the provided racial or ethnic categories were given the option to select “other” as their response.