S5.

Annual number of hospitalization of sampled former stomach and esophageal cancer patients by area (d)

Variable	Stomach cancer				Esophageal cancer
	All areas	Urban areas	Rural areas		All areas	Urban areas	Rural areas
*, clinical stage information of 519 patients was not reported; **, pathologic type information of 77 cases was not reported.
All	1.95	2.91	1.60		1.86	2.89	1.50
Sex
Male	1.94	3.15	1.58		2.02	2.95	1.55
Female	1.98	2.54	1.65		1.43	1.81	1.41
Age
Non-elderly	2.21	2.98	1.72		2.16	3.12	1.54
Elderly	1.76	2.79	1.53		1.74	2.72	1.49
Clinical stage*
I	1.94	2.88	1.52		1.96	2.92	1.56
II	2.18	2.97	1.92		2.11	3.17	1.72
III	2.17	3.17	1.77		2.03	3.12	1.50
IV	1.92	2.98	1.28		1.99	2.84	1.60
Pathologic type**
Adenocarcinoma	2.15	3.34	1.71		2.82	2.89	2.80
Squamous cell carcinoma	−	−	−		2.05	3.04	1.61
Other	1.33	1.60	1.20		1.24	1.94	1.12
Treatment
Surgery	1.43	1.93	1.15		1.64	2.66	1.20
Radiotherapy	1.44	−	1.44		1.50	3.46	1.37
Chemotherapy	2.52	4.18	2.10		2.30	2.71	2.00
Concurrent chemoradiotherapy	1.57	1.30	1.82		1.89	3.26	1.56
Palliative care	2.58	6.65	1.81		2.59	4.45	2.21