Screening status, tumour subtype, and breast cancer survival: a national population-based analysis

Breast Cancer Research and Treatment
Katie M O'BrienL Sharp

Abstract

We examined whether demographic and tumour characteristics (including subtype) were different for women with breast cancer diagnosed via mammography screening compared with women with interval breast cancers, lapsed attenders of the screening programme and non-participants of the screening programme. In addition, we explored whether there were survival differences between the groups, taking into account lead time bias. We used linked data from National Cancer Registry Ireland and the national breast screening programme BreastCheck. Multinomial logistic regression was used to test the association of covariates with screening status. For survival analysis, we corrected the survival time for screen-detected cases for lead time bias, examined Kaplan-Meier curves and then used Cox regression to investigate differences in survival by screening status. Subtype (HER2 over-expressing, triple negative), stage (III/IV), grade (poor), having co-morbidities, area of deprivation, smoking status and age were associated with having interval cancer or being a non-participant of the screening programme in the multivariable model. After correcting for lead time bias, and adjusting for variables associated with screening status, there was no evide...Continue Reading

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Citations

Jan 10, 2021·Breast Cancer Research and Treatment·Johanna AlankoJorma Isola
Sep 1, 2021·Cancer Medicine·Anne Marie McCarthyKatrina Armstrong
Nov 25, 2021·Cancer Causes & Control : CCC·Marta Hernández-GarcíaDolores Salas
Jan 14, 2022·Breast Cancer Research and Treatment·Genevieve A FasanoLisa Newman

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