Table 6. Multivariate analysis between the clinical characteristics and toxicity.

Characteristics	OR	95%CI	P value
Age	0.990	0.968–1.012	0.357
Gender	0.837	0.520–1.348	0.464
Smoking status	0.662	0.370–1.045	0.073
Performance status	0.760	0.459–1.258	0.286
Disease stage	1.027	0.624–1.689	0.916
Histological type	1.454	0.897–2.002	0.082
Chemotherapy regimens	0.875	0.623–1.228	0.439