Figure 2 | Scientific Reports

Figure 2

From: Prevalence of severe-profound hearing loss in South Korea: a nationwide population-based study to analyse a 10-year trend (2006–2015)

Figure 2

The total number of patients with severe-profound hearing loss (HL) in South Korea determined using a nationwide population-based study to analyse a 10-year trend in hearing impairment. (A) The number is the highest in 2011 (0.25 million individuals), and decreases gradually until 2015. (B) From 2006 to 2015, the prevalence of 1st grade HL increased from 1.91% to 3.04%; 2nd grade HL decreased from 24.5% to 18.1%; 3rd grade HL decreased from 17.89% to 16.75%; 4th grade HL increased from 19.56% to 21.77%; 5th grade HL increased from 18.6% to 24.63%; and 6th grade HL decreased from 17.54% to 15.71%. 1both-side HL ≥ 90 dB HL and speech disorder, 2both-side HL ≥ 90 dB HL, 3both-side HL ≥ 80 dB HL, 4both-side HL ≥ 70 dB HL, 5both-side HL ≥ 60 dB HL, 6worse-side HL ≥ 80 dB HL and other-side HL ≥ 40 dB HL.

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