OGG1 and noise induced hearing loss: The subjects with the hOGG1 Cys/Cys genotype had an increased risk of NIHL in the >25-year group (adjusted OR = 2.48, 95% CI = 1.20–5.14), the 85 to 92 dB(A) noise exposure level group (2.83, 1.46–5.49), the ever smoking group (1.68, 1.04–2.70), and the ever drinking group (1.78, 1.18–2.68).