Spots Global Cancer Trial Database for Patient Outcomes From Second Film-readers and Test Threshold Relaxation in Breast Screening

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Trial Identification

Brief Title: Patient Outcomes From Second Film-readers and Test Threshold Relaxation in Breast Screening

Official Title: Patient Outcomes From Second Film-readers and Test Threshold Relaxation in Breast Screening: An Observational Retrospective Cohort Study

Study ID: NCT04365114

Conditions

Breast Cancer

Ductal Carcinoma in Situ

Interventions

Breast Screening Mammography with single reader

Breast screening mammography with two readers

Test threshold

Study Description

Brief Summary: Analysis of women's medical records to understand the impact of previous changes to breast cancer screening (increase from one to two clinicians examining each woman's mammograms, and what proportion of women they recall for further tests)

Detailed Description: Retrospective observational study examining the records and outcomes of women who attended breast cancer screening between 1988 and 2016. Linkage of records from the breast screening service, the cancer registry, and mortality. Analysis of whether changing the threshold for whether to recall women for further tests or the number of clinicians examining the mammograms for signs of cancer affects outcomes.