Population-based study of the relationship of treatment and sociodemographics on quality of life for early stage breast cancer

Abstract

Objective : To examine the relationship between cancer stage, surgical treatment and chemotherapy on quality of life (QOL) after breast cancer and determine if sociodemographic characteristics modify the observed relationships. Methods : A population-based sample of women with Stages 0–II breast cancer in the United States (N=1357) completed surveys including the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30), and the Breast Cancer-Specific Quality of Life Questionnaire (QLQ BR-23). Regression models calculated mean QOL scores across primary surgical treatment and chemotherapy. Clinically significant differences in QOL were defined as 10 point difference (out of 100) between groups. Results : Meaningful differences in QOL by surgical treatment were limited to body image with women receiving mastectomy with reconstruction reporting lower scores than women receiving breast conserving surgery ( p < 0.001). Chemotherapy lowered QOL scores overall across four QOL dimensions ( p values < 0.001), with a disproportionately greater impact on those with lower levels of education. Younger women reported lower QOL scores for seven of nine QOL dimensions ( p values < 0.001). Conclusions : Women should be reassured that few QOL differences exist based on surgical treatment, however, clinicians should recognize that the impact of treatment on QOL does vary by a woman’s age and educational level.