Table 2.
Demographic, educational, and medical history characteristics of 74 children with unilateral hearing loss (cases) compared with 74 siblings with normal hearing (controls).
| Cases | Controls | P value | |
|---|---|---|---|
| Mean age (SD), years | 8.8 (1.8) | 9.1 (2.4) | 0.33 |
| Male sex, n (%) | 38 (51%) | 40 (54%) | 0.87 |
| Adopted, n (%) | 6 (8%) | 6 (8%) | 1.0 |
| First-born, n (%) | 25 (34%) | 30 (41%) | 0.60 |
| Repeated grade, n (%) | 8 (11%) | 4 (5%) | 0.37 |
| Mean age of 1st word (SD), in months |
10.8 (4.2) | 10.0 (4.4) | 0.24 |
| Mean age of 1st 2-word phrase (SD), in months |
17.8 (8.8) | 15.3 (8.3) | 0.13 |
| Received speech therapy, n (%) | 31 (42%) | 16 (22%) | 0.01 |
| IEP/504 plans, n (%) | 34 (46%) | 12 (16%) | <0.01 |
| School-related behavioral problems, n (%) |
23 (31%) | 19 (26%) | 0.58 |
| Full scale IQ , mean (SD) | 101.9 (17.2) | 103.8 (17.3) | 0.42 |
| Verbal IQ, mean (SD) | 102.6 (15.0) | 104.3 (14.8) | 0.50 |
| Performance IQ, mean (SD) | 100.8 (13.8) | 102.5 (14.9) | 0.46 |
| Premature birth, n (%) | 14 (19%) | 10 (14%) | 0.97 |
| History of head trauma, n (%) | 14 (19%) | 4 (5%) | 0.02 |
| History of recurrent otitis media, n (%) |
22 (30%) | 18 (24%) | 0.58 |
| Received tympanostomy tubes, n (%) | 24 (32%) | 17 (23%) | 0.27 |
| Attention deficit hyperactivity disorder, n (%) |
8 (11%) | 6 (8%) | 0.78 |