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Table 4 Multivariate analysis of factors associated with grade ≥ 3 RP

From: The risk and predictors for severe radiation pneumonitis in lung cancer patients treated with thoracic reirradiation

Variable OR(95CI) P value
Initial-MLD 14.515 (1.778–118.494) 0.013
Composite-V5 7.398 (1.319–41.495) 0.023
OverlapV5/ReV5   0.041
 0–0.4 5.564 (0.382–81.023) 0.209
 0.4–0.8 11.01 (1.71–70.881) 0.012
 0.8–1 1  
  1. Abbreviations: RP radiation pneumonitis, Initial initial radiation plan, MLD mean lung dose, Composite composite plan, Overlap-V5/Re-V5 the overlap between V5 of initial RT and V5 of re-RT plans/V5 of re-RT plans, Vx percent volume of lung exposed to at least x Gy