Assessment of the feasibility and coverage of a modified universal hearing screening protocol for use with newborn babies of migrant workers in Beijing

Table 2 The incidence of congenital hearing impairment in present study

Degree of hearing loss	Bilateral HL (case)		Unilateral HL (case)		Total
Degree of hearing loss	Symmetric	Asymmetric	Left ear	Right ear	Total
Mild (31-50dB nHL)	6	2	8	7	23
Moderate(51-70dB nHL)	2	0	0	0	2
Severe(71-90dB nHL)	0	0	1	0	1
Profound(≥91dB nHL)	2	0	5	2	9
Total	10	2	14	9	35

ISSN: 1471-2431