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Table 2 The incidence of congenital hearing impairment in present study

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

Degree of hearing loss Bilateral HL (case) Unilateral HL (case) Total
Symmetric Asymmetric Left ear Right ear
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