Table 1.

Study subject characteristics (N=145 subjects).

Characteristic
Male	89 (61.4%)
Race/Ethnicity
Non Hispanic white	94 (64.8%)
African American	39 (26.9%)
Mixed & Other	11 (7.6%)
Hispanic	1 (0.7)%
NICU	19 (13%)
Mean age (SD)	1.8 (1.3)
	Range [0.8-6.9]
Risk Factors*
None listed	105 (72.4%)
NICU >5 days	19 (13.1%)
Family history	12 (8.3%)
Resuscitation required	6 (4.1%)
Craniofacial anomaly	5 (3.5%)
Hyperbilirubenemia	9 (6.2%)
Ototoxic drugs	11 (7.6%)
Birth weight <1500g	4 (2.8%)
Ear tag or earpit	6 (4.1%)

^*Percentages add up to more than 100% due to multiple risk factors for individuals.