European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire - Breast Cancer Phase IV Module Version 45 Items

**Semantic type:** Intellectual Product

**Definition:** A standardized 45-item questionnaire module developed in 2020 to supplement the European Organisation for Research and Treatment of Cancer (EORTC) QLQ-C30 core questionnaire as an update of the EORTC QLQ-BR23 in assessing the quality of life in patients with breast cancer.

**Synonyms:** - EOR31 - EORTC QLQ-BR45 PHASE IV MODULE - EORTC QLQ-BR45 Phase IV Module Version