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Table 3 Multivariate analysis of dosimetric parameters associated with AE

From: Risk factors of radiation-induced acute esophagitis in non-small cell lung cancer patients treated with concomitant chemoradiotherapy

 Grade Variable  B  S.E. Wald df  Sig. Exp (B) 95.0% C.I. for EXP (B)
Lower Upper
Grade 2 V40 0.148 0.036 17.248 1 <0.001 1.159 1.081 1.243
Constant -2.760 0.811 11.574 1 0.001 0.063   
Grade 3 V50 0.115 0.030 15.204 1 <0.001 1.122 1.059 1.189
CCA 2.271 0.886 6.565 1 0.010 9.686 1.705 55.016
Constant -8.389 2.138 15.393 1 <0.001 <0.001   
  1. Abbreviations: AE acute esophagitis, CCA concomitant chemotherapy agents (vinorelbine/cisplatin vs. docetaxel/cisplatin), V40,50 relative esophageal volume for radiation dose ≥40,50 Gy, respectively.