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Table 4 Multivariate analysis of the development of osteoradionecrosis of the jaw

From: Risk factors for osteoradionecrosis of the jaw in patients with head and neck squamous cell carcinoma

Variable HR 95% CI P value
Post-RT tooth extraction 1.769 0.904–3.464 0.0960
Tumor site (OPC/OC vs. others) 3.577 1.443–8.866 0.0059
Pre-RT mandible surgery 1.714 0.753–3.902 0.1988
V60 (≤ 14% vs. > 14%) 3.872 1.460–10.270 0.0065
  1. HR, hazard ratio; CI, confidence interval; RT, radiation therapy; OPC, oropharyngeal cancer; OC, oral cancer; V60, relative volumes of the jaw exposed to 60 Gy