Clinical features, outcomes and treatment-related pneumonitis in elderly patients with esophageal carcinoma

Table 4 Multivariate Cox regression analysis of prognostic factors in patients in whom treatment-related pneumonitis occurred

	B	SE	Wald	df	P	Exp(B)	95%CI for Exp(B)
							Lower	Upper
TRP grade	0.465	0.315	2.182	1	0.140	1.592	0.859	2.949
Lymph node metastasis	-0.459	0.461	0.989	1	0.320	0.632	0.256	1.561
Distant metastasis	-0.113	0.923	0.015	1	0.902	0.893	0.146	5.454
Tumor TNM stage	0.592	0.296	3.983	1	0.046	1.807	1.011	3.231
Radiation dose	-0.425	0.316	1.811	1	0.178	0.654	0.352	1.214

B: Regression coefficient; SE: Standard error; df: Degree of freedom; TNM: Tumor, node, metastasis; TRP: Treatment-related pneumonitis.