Table 5.

Decisional regret and EQ-5D-3L health utilities by treatment group

	Surgery regret* (n = 463)			Radiation therapy regret†,‡ (n = 340)			EQ-5D-3L§ (n = 466)
	n	Mean (95% CI)	P value	n	Mean (95% CI)	P value	n	Mean (95% CI)	P value
Lump + WBI	105	19.4 (9.8–29.0)	Referent	103	28.5 (18.3–38.8)	Referent	106	0.86 (0.81–0.90)	Referent
Lump + Brachy	101	17.7 (8.5–26.8)	.52	99	27.2 (17.0–37.4)	.63	100	0.88 (0.84–0.92)	.23
Lump alone	74	13.8 (3.4–24.2)	.09	34	24.6 (14.1–35.0)	.28	72	0.85 (0.79–0.90)	.73
Mast alone	83	20.1 (10.8–29.4)	.81	–	–	–	86	0.79 (0.73–0.86)	.15
Mast + RT	100	22.0 (12.9–31.2)	.28	104	33.4 (23.6–43.2)	.10	102	0.78 (0.73–0.82)	.004

Abbreviations: CI = confidence interval; Lump alone = lumpectomy plus endocrine therapy alone; Lump + Brachy = lumpectomy plus brachytherapy; Lump + WBI = lumpectomy plus whole-breast irradiation; Mast alone = mastectomy alone; Mast + RT = mastectomy plus radiation therapy.

^*The model for surgery regret was adjusted for race, Charlson Comorbidity Index, patient-reported education, and income.

^†The model for radiation therapy regret was adjusted for race, Charlson Comorbidity Index, baseline body mass index, and region.

^‡For the Lump alone group, the outcome was decisional regret regarding skipping radiation therapy.

^§The model for EQ-5D-3L was adjusted for Charlson Comorbidity Index, chemotherapy, and patient-reported income.