Skip to main content

Table 1 Categories of HFHL levels

From: A risk model and nomogram for high-frequency hearing loss in noise-exposed workers

HFHL level

BHFTA (dB)

Normal hearing

≤25

Suspected HFHL

26–39

HFHL

40–79

Severe HFHL

≥80

  1. Abbreviations: HFHL high-frequency hearing loss, BHFTA binaural high-frequency threshold average
  2. Footnote. According to the General Guidelines for the Diagnosis of Occupational Diseases (GBZ/T 265–2014), HFHL is defined as a BHFTA ≥40 dB
Back to article page

BMC Public Health

ISSN: 1471-2458

Contact us