Table 3.

Comparison of health utility between treated and untreated groups after propensity score matching.

	Overall mean	Treatment groups
	Mean	No radiation (N = 133)		Radiation (N = 459)		p-value
		N	Mean (SD)	N	Mean (SD)
Utility	0.696		0.676 (0.130)		0.701 (0.123)	.0423
Age
65–69	0.720	29	0.686 (0.132)	155	0.727 (0.116)	.091
70–74	0.709	35	0.698 (0.135)	154	0.711 (0.123)	.566
75–79	0.668	30	0.655 (0.123)	89	0.673 (0.114)	.465
80+	0.657	39	0.669 (0.117)	61	0.652 (0.131)	.570
Race
White	0.697	110	0.675 (0.128)	372	0.704 (0.120)	.031
Black	0.688	12	0.679 (0.106)	44	0.691 (0.143)	.786
Others	0.689	11	0.687 (0.142)	43	0.690 (0.125)	.958
Marital status
Married	0.717	55	0.690 (0.119)	244	0.722 (0.109)	.053
Unmarried	0.674	78	0.666 (0.132)	251	0.677 (0.133)	.2813
Comorbidity
Healthy (0 comorbidities)	0.801	11	0.794 (0.105)	44	0.803 (0.107)	.818
1–2 comorbidities	0.744	59	0.729 (0.110)	186	0.744 (0.105)	.327
>2 comorbidities	0.638	63	0.607 (0.105)	229	0.647 (0.113)	.012
Time from diagnosis to treatment
<2 months	0.696	110	0.674 (0.124)	375	0.702 (0.122)	.034
≥2 months	0.693	23	0.686 (0.142)	84	0.695 (0.127)	.765
Time from diagnosis to survey
0–6 months	0.687	22	0.679 (0.128)	64	0.691 (0.137)	.766
7–12 months	0.693	19	0.667 (0.122)	56	0.701 (0.111)	.253
13–18 months	0.737	21	0.720 (0.129)	63	0.742 (0.115)	.462
19+ months	0.688	71	0.665 (0.137)	276	0.694 (0.122)	.073
Education
High school or less	0.684	79	0.663 (0.126)	250	0.691 (0.129)	.102
Some college or 2 years degree	0.698	37	0.695 (0.131)	129	0.699 (0.115)	.864
College graduate or higher	0.730	17	0.695 (0.122)	80	0.737 (0.107)	.1545