A little more than half of the women in each group completed the quality of life questionnaires after the treatment and again at follow-up, investigators said.
Global health status was stable over time in both groups, investigators reported. In the APBI group, global health status score on a scale of 0-100 was 65.6 right after the procedure and 66.2 at 5 years; similarly, scores in the whole breast irradiation group were 64.6 after radiotherapy and 66.0 at 5 years.
The only quality of life difference between arms that investigators characterized as moderately clinically relevant was in breast symptom scores, which were significantly worse in the whole breast radiation group right after radiotherapy (difference of means, 13.6; 95% CI, 9.7-17.5; P less than .0001) and at 3-month follow-up (difference of means, 12.7; 95% CI, 9.8-15.6; P less than .0001).
Emotional functioning, fatigue, and financial difficulty scores in the APBI group were “slightly better” than in the whole breast radiation group right after radiotherapy and at a 3-month follow-up, investigators reported; however, at 5 year follow-up, there were no significant differences between arms in those measures.