Plain Language Summary

The EQ Health and Wellbeing (EQ-HWB) and its shorter version (EQ-HWB-S) are recently developed experimental instruments designed to measure health-related quality of life and broader aspects. This study assesses the measurement properties of both versions in patients with breast cancer—the most common cancer worldwide—and compares them with other standardized instruments, including the EQ-5D-5L, FACT-8D, and SWEMWBS.

Based on survey data from 300 female patients with breast cancer, results showed that all patients reported problems on at least one EQ-HWB(-S) item. Findings suggest that items such as exhaustion, pain, and sleep disturbances are particularly relevant for patients with breast cancer. The EQ-HWB and EQ-HWB-S corresponded well with the other instruments, indicating that they effectively capture comparable areas of health outcomes. Both the EQ-HWB and EQ-HWB-S produced consistent results over time, distinguished between groups of patients based on their health conditions, and detected changes in patients' health over time.

In summary, both EQ-HWB and EQ-HWB-S demonstrate robust psychometric performance and can be recommended for use in breast cancer populations.

^{Note: This content was created with assistance from artificial intelligence (AI) and has been reviewed and edited by ISPOR staff. For more information or for inquiries on ISPOR’s AI policy, click here or contact us at info@ispor.org.}