Auditory Brainstem Responses to Bone-Conducted Brief Tones in Young Children with Conductive or Sensorineural Hearing Loss

Table 3

Comparison of BC-ABR category to BC behavioural threshold data for 2000 Hz and 500 Hz.

			BC-ABR category (dBnHL)
			Normal	35–60	>60
2000 Hz; 41 ears	Behavioural outcome category (dBHL)	Normal	9 (22.0%)	0 (0%)	0 (0%)
		30–65	1 (2.4%)	15 (36.6%)	1 (2.4%)
		>65	0 (0%)	0 (0%)	15 (36.6%)
			Normal	25–45	>50
500 Hz; 19 ears	Behavioural outcome category (dBHL)	Normal	13 (68.4%)	0 (0%)	0 (0%)
		30–55	1 (5.3%)	1 (5.3%)	0 (0%)
		>55	0 (0%)	0 (0%)	4 (21.1%)

Percent of total ears in parentheses.
BC ABR “normal” levels: 30 and 20 dBnHL for 2000 and 500 Hz.
BC behavioural “normal” levels are ≤25 dBHL.