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Table 2 Factors analysis with parotid gland function

From: Normal tissue complication probability model parameter estimation for xerostomia in head and neck cancer patients based on scintigraphy and quality of life assessments

Factors* Spearman’s correlation β-value 95% confidence interval Univariate analysis (p-value) Multivariate analysis (p-value)
Parotid mean dose −0.807 −0.759 −0.25-−0.15 < 0.001 < 0.001
Age (≥ 50 vs. <50) 0.146 0.141 −3.28-24.92 0.26 0.13
Tumor site (oral cavity vs. non-oral cavity) −0.116 −0.101 −40.55-25.12 0.37 0.64
Surgery (yes vs. no) −0.052 −0.092 −40.27-26.17 0.69 0.67
Chemotherapy (yes vs. no) 0.017 0.166 −1.37-27.24 0.90 0.08
  1. *Factors associated with recovery of parotid gland function at 1 year after radiotherapy.