. 2018 Jan 9;9(10):9512–9530. doi: 10.18632/oncotarget.24056

Table 1. Patient characteristics (clinical factors and imaging factors) distribution and Cox regression analysis results of radiographic factors across included patients.

Characteristics	Numbers of patients	95% CI		Median	Min	Max	P Value^*
Characteristics	Numbers of patients	Lower bound	Upper bound	Median	Min	Max	P Value^*
Largest long diameter (mm)		324	19.6	50.9	34.7	14.4	75.8	0.000
Largest short diameter (mm)		324	11.1	31.4	20.9	9	63	0.094
Barium lesion length (mm)		281	0	70	40	0	120	0.104
CT lesion length (mm)		324	10	110	50	0	187.5	0.003
Maximal lesion area (mm²)		324	196.1	1091.6	535.5	0	2347	0.012
Maximal curvature angle: esophagus with aorta		324	0	196.5	87	0	360	0.086
Maximal curvature angle: esophagus with trachea		324	0	113.9	0	0	194	0.334
Length of pericardium invaded (mm)		324	0	37.5	10	0	60	0.229
Sex	Female	239						0.010
Sex	Male	85
Age			35	86	56.5 (yr)			0.820
Adjuvant chemotherapy	Yes	93						0.586
Adjuvant chemotherapy	No	231
Adjuvantradiotherapy	Yes	22						0.226
Adjuvantradiotherapy	No	302
Primary location	Upper	12						0.499
	Middle	204
	Lower	108
Positive margins	Yes	4						1.000
Positive margins	No	320
Pathologic cellular differentiation level	G1	28						0.550
	G2	231
	G3	62
Type of lymph node dissection	2-field	267						0.194
Type of lymph node dissection	3-field	57
PathologicalTstage	Tis+T1	50						0.000
	T2	27
	T3	126
	T4	121
Pathological N stage	N0	187						0.000
Pathological N stage	N+	137

^*As determined by Cox-regression analysis.