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Table 2 Characterization of subjects according to the hours worked per day, length of time working and use of hearing protectors.

From: Prevalence of high frequency hearing loss consistent with noise exposure among people working with sound systems and general population in Brazil: A cross-sectional study

  Distribution of participants of the sound professionals group
Variables Frequency %
Hours worked/day   
   < 6 hours 24 29.3
   6 to 12 hours 47 57.3
   > 12 hours 11 13.4
Length of time working as sound technicians   
5.0 to 14.9 39 47.6
15.0 to 24.9 30 36.6
25.0 to 34.9 11 13.4
35.0 to 45.0 2 2.4
Average ± SD 15.9 ± 8.8
Use of hearing protectors   
No 70 85.4
Yes 12 14.6