Table 2.

Utility weights by health states related to colorectal cancer.

Variable		HS 1	HS 2	HS 3	HS 4	HS 5	HS 6	HS 7
Total	N	415	402	396	407	422	392	381
	Mean ± SD	0.76 ± 0.31	0.67 ± 0.32	0.62 ± 0.33	0.57 ± 0.32	0.59 ± 0.31	0.57 ± 0.31	0.47 ± 0.32
	Median	0.90	0.80	0.75	0.65	0.65	0.65	0.45
	1st quartile	0.60	0.35	0.30	0.30	0.30	0.30	0.20
	2nd quartile	0.90	0.80	0.75	0.65	0.65	0.65	0.45
	3rd quartile	1.00	0.95	0.90	0.85	0.85	0.84	0.75
Gender	Man	0.82	0.72	0.70	0.62	0.62	0.61	0.47
	Woman	0.79	0.67	0.61	0.57	0.59	0.57	0.43
Age group (years)	19–29	0.78	0.73	0.66	0.63	0.63	0.63	0.49
	30–39	0.81	0.64	0.64	0.56	0.60	0.58	0.46
	40–49	0.84	0.68	0.68	0.59	0.62	0.60	0.42
	50–59	0.80	0.71	0.67	0.58	0.60	0.56	0.43
	≥60	0.81	0.71	0.63	0.63	0.60	0.58	0.46
Education level	High school or below	0.81	0.69	0.64	0.60	0.59	0.57	0.43
	College or above	0.81	0.69	0.68	0.59	0.64	0.62	0.48
Occupation	Non-manual	0.82	0.68	0.69	0.62	0.63	0.62	0.53**
	Manual	0.78	0.69	0.64	0.56	0.59	0.55	0.38**
	Other	0.84	0.71	0.65	0.64	0.63	0.62	0.50**
Monthly income	<2.5 million won	0.81	0.69	0.64	0.62	0.58	0.57	0.34*
	2.5–5.0 million won	0.80	0.68	0.64	0.57	0.60	0.58	0.48*
	≥5.0 million won	0.88	0.76	0.78	0.72	0.71	0.72	0.48*
Ambulatory care visit in the past 2 weeks	Yes	0.79	0.68	0.68	0.58	0.60	0.58	0.35
	No	0.81	0.69	0.65	0.60	0.61	0.59	0.46
Hospitalization in the past 12 months	Yes	0.84	0.74	0.75	0.68	0.60	0.63	0.30
	No	0.81	0.69	0.65	0.60	0.61	0.59	0.46
Morbidity	Yes	0.80	0.69	0.70	0.64	0.59	0.56	0.42
	No	0.81	0.69	0.65	0.59	0.61	0.59	0.45

*P-value < 0.05, **P-value < 0.01.

HS: health state; SD: standard deviation.

HS1: Adenomatous polyps; HS2: Colon cancer requiring colon resection; HS3: Rectal cancer requiring resection of the rectum; HS4: Colon cancer requiring colon resection and systemic chemotherapy; HS5: Rectal cancer requiring resection of the rectum and chemoradiation therapy; HS6: Rectal cancer requiring resection of the rectum, stoma formation, and chemoradiation therapy; HS7: Metastatic colon cancer.