Early Esophageal Cancer Specific Survival Is Unaffected by Anatomical Location of Tumor: A Population-Based Study

Table 2

EEC-specific 1-year survival percentage.

Characteristic	N	Number of deaths	1-year % survival	Mean 1-year survival (95% CI), months	value
Overall survival	1330	71	94.70%	11.66 (11.57–11.75)
Treatment
Endoscopic treatment	411	18	95.60%	11.74 (11.60–11.88)	0.30
Esophagectomy	919	53	94.20%	11.63 (11.52–11.74)
Histological grade
Adenocarcinoma	1011	52	94.90%	11.65 (11.54–11.75)	0.02
Squamous cell carcinoma	158	15	90.50%	11.52 (11.24–11.80)
Others	161	4	97.50%	11.88 (11.76–12.00)
Location
Upper	54	4	92.60%	11.43 (10.82–12.03)	0.48
Middle	176	12	93.20%	11.60 (11.33–11.86)
Lower	1100	55	95.00%	11.68 (11.59–11.78)
Staging
Stage Tis	270	12	95.60%	11.69 (11.50–11.89)	0.48
Stage T1a	1060	59	94.40%	11.65 (11.55–11.75)