Table 4. Medical care costs according to initial treatment modalities in stage I.

Variables	ESD	Surgery	Surgery with CTx	P-value
Total first-year costs ($)	6,028±5,092	11,391±4,778	8,715±7,852	<0.001
Insurer payments	2,113±1,655	5,708±3,455	6,388±4,698	<0.001
Patient payments	1,133±1,246	3,788±2,646	1,363±2,648	<0.001
Cost of initial treatment	1,795±1,292	6,906±3,046	6,534±2,687	<0.001
Cost after initial treatment	2,194±1,992	3,411±3,995	2,254±3,649	<0.001
No. of outpatient visits	8.9±5.2	10.7±7.9	11.8±11.1	<0.001
No. of admissions	1.2±0.8	1.3±1.1	1.6±1.9	>0.050

Data shown are mean±standard deviation.

ESD = endoscopic submucosal dissection; CTx = chemotherapy.