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Table 1 Distribution of participants in the study groups according to age, gender, hearing complaints, music listening habits, tinnitus and presence of ototoxicity exposure.

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

Variables Sound technicians Controls p
  n = 82 % n = 95 %  
Age      
   < 25 8 9.8 9 9.5 0.949a
   25 to 35 33 40.2 52 54.7 0.054a
   36 to 45 23 28.0 21 22.1 0.316a
   > 45 18 22.0 13 13.7 0.149a
   Mean ± SD 37.38 ± 9.98 35.09 ± 9.56 0.122b
   Min-max 20–65 22–65  
Gender      
Female 4 4.9 4 4.2 0.718a
Male 78 95.1 91 95.8  
Hearing Complaint      
   No 60 73.2 84 88.4  
   Yes 22 26.8 11 11.6 0.009a
Music listening habits      
   No 57 69.5 70 73.7 0.539a
   Yes 25 30.5 25 26.3  
Tinnitus      
No 52 63.4 84 88.4 < 0.001a
Yes 30 36.6 11 11.6  
Ototoxicity exposure      
No 72 87.8 84 88.4 > 0.05
Yes 10 12.0 11 11.6  
  1. aChi-square test i Student's t test for homogenous independent samples