Table 3. Medical care costs according to the stage.

Variables	Stage I	Stage II	Stage III	Stage IV	P-value
Total first-year costs ($)	8,907±5,790	12,956±10,988	18,277±11,489	25,753±15,520	<0.001
Insurer payments	4,412±3,453	7,768±8,886	11,476±7,881	19,559±10,885	<0.001
Patient payments	2,482±2,529	3,463±3,576	5,549±6,183	4,158±4,537	<0.001
Cost of initial treatment	4,700±3,489	6,157±4,161	7,974±5,631	6,478±6,439	<0.001
Cost after initial treatment	2,807±3,317	5,682±6,736	8,510±9,091	17,012±15,577	<0.001
No. of outpatient visits	10.0±7.2	14.0±9.0	17.0±12.0	20.5±17.6	<0.001
No. of admissions	1.3±1.1	2.9±2.8	5.5±5.3	8.7±7.5	<0.001

Data shown are mean±standard deviation.