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Table 4 Bivariate analysis of Cisplatin effect on radiation dose levels.

From: Sensorineural hearing loss after concurrent chemoradiotherapy in nasopharyngeal cancer patients

Factors Relative risk Test for homogeneity
Cochlea mean dose (Gy)   p = 0.21
> 50 2.1 (95% CI 0.62-7.15)  
≤ 50 0.63 (95% CI 0.15-2.67)  
Inner ear mean dose (Gy)   p = 0.14
> 45 3.06 (95% CI 0.51-18.33)  
≤ 45 0.67 (95%CI 0.2-2.19)  
IAC mean dose (Gy)   p = 0.89
> 50 1.33 (95% CI 0.47-3.78)  
≤ 50 1.18 (95% CI 0.29-4.81)