The structural landscape of the health care system for breast cancer care: results from the Los Angeles Women's Health Study.

The structure of health care has been rapidly evolving in response to financial pressures and demands to improve quality. Little work has documented the structure of care and its impact in the context of breast cancer care. We conducted a survey to characterize Los Angeles physicians caring for breast cancer patients and the structural landscape of the healthcare system in which they practice.

Does concordance between data sources vary by medical organization type?

Objective: Little is known about how concordance between patient self-report and medical record data varies with medical organization type. Given discrepancies in quality of care received across patient cohorts and organizations, it is important to understand the degree to which concordance metrics are robust across organization types. We tested whether concordance between patient selfreport and medical record data would vary with medical organization type, controlling for patient demographic characteristics, health status, and domain of medical care.