Comparison and Prognostic Analysis of Adjuvant Radiotherapy versus Salvage Radiotherapy for Treatment of Radically Resected Locally Advanced Esophageal Squamous Cell Carcinoma

Table 1

Patient characteristics in the two treatment groups.

	Adjuvant radiotherapy group	Salvage radiotherapy group	P value
Gender
Male, (%)	64 (81.0)	63 (82.9)	0.84
Female, (%)	15 (19.0)	13 (17.1)
Age (years), mean (range)	58 (44–80)	63 (46–82)
>65 years, (%)	14 (17.7)	22 (28.9)	0.128
≤65 years, (%)	65 (82.3)	54 (71.1)
Performance status
<2, (%)	56 (70.9)	36 (47.4)	0.003
≥2, (%)	23 (29.1)	40 (52.6)
Surgical-pathological stage
I, (%)	1 (1.3)	3 (3.9)	0.07
II, (%)	34 (43.0)	44 (57.9)
III, (%)	44 (55.7)	29 (38.2)
pT stage
1, (%)	0 (0.0)	4 (5.3)	0.01
2, (%)	14 (17.7)	23 (30.3)
3, (%)	53 (67.1)	46 (60.5)
4, (%)	12 (15.2)	3 (3.9)
pN status
−, (%)	38 (8.1)	38 (50.0)	1.0
+, (%)	41 (51.9)	38 (50.0)
Histologic grade
1, (%)	8 (10.1)	4 (5.3)	0.61
2, (%)	51 (64.6)	48 (63.2)
3, (%)	11 (13.9)	14 (18.4)
Unknown, (%)	9 (11.4)	10 (13.2)
Tumor location
Upper, (%)	11 (13.9)	9 (11.8)	0.76
Middle, (%)	54 (68.4)	55 (72.4)
Lower, (%)	14 (17.7)	12 (15.8)
Adjuvant chemotherapy
Yes, (%)	35 (44.3)	39 (51.3)	0.07
No, (%)	44 (55.7)	37 (48.7)