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Figure 5. Effects of different factors on NIHL at 4 kHz in workers after dividing the subjects into low-risk and high-risk groups based on median values. Abbreviations: E = noise exposure, Sm = Smoking habits, P = use of analgesics. 0 = below median 1 = above median

Figure 5. Effects of different factors on NIHL at 4 kHz in workers after dividing the subjects into
low-risk and high-risk groups based on median values.
Abbreviations: E = noise exposure, Sm = Smoking habits, P = use of analgesics.
0 = below median 1 = above median