Table 3. Univariate analysis for factors affecting the acute dermatitis.

Variables	Odds Ratio (95% CI)	P value (≥grade 2 acute skin toxicities)
Age	0.889 (0.606,1.304)	0.547
PTV (≤520 vs. > 520 cc)	0.540 (0.363, 0.801)	0.002
Breast PTV107% (≤3.3% VS. > 3.3%)	0.687 (0.464,1.107)	0.071
Chemotherapy (yes vs. no)	1.105 (0.624, 1.416)	0.766
RLN (yes vs. no)	1.025 (0.682,1.540)	0.906