Mammography Among Women Residing in Urban Versus Rural Utah: Breast Cancer Survival

Overview

Journal Cancer Med

Specialty Oncology

Date 2024 Dec 16

PMID 39679751

Authors

Quinn Tanner

Chun-Pin Chang

Karen Curtin

James VanDerslice

Lisa Gren

Vikrant Deshmukh

Michael Newman

Ankita Date

Mark Dodson

N Lynn Henry

Mia Hashibe

Affiliations

Soon will be listed here.

Abstract

Background: Annual or biennial breast cancer screenings are recommended for women 40 and older. Women residing in rural areas have worse breast cancer survival rates than urban women, but no study has focused on rural versus urban residence in Utah regarding breast cancer screening and mortality.

Methods: Cases (n = 14,516) were women aged > 39 diagnosed with a first primary invasive breast cancer between 1998 and 2017 in Utah. Controls (n = 63,117) without a history of breast cancer were matched to cases by birth year and birth state. Mammography screening status was identified by Current Procedural Terminology (CPT) codes. Logistic regression was used to assess the odds of breast cancer diagnosis. The Cox proportional hazards model was used to assess survival outcomes for rural and urban breast cancer patients based on screening status.

Results: Screening mammography usage among rural patients diagnosed with breast cancer was lower (17.7%) than urban usage (20.7%). Usage of screening mammograms resulted in higher odds of breast cancer diagnosis at localized stage rather than at a regional and distant stage. Rural breast cancer cases had a higher proportion of deaths, and a lower proportion screened, than urban breast cancer cases. Hazard ratios showed that screening mammography usage was associated with better survival among both rural (HR = 0.50, 95% CI = 0.44-0.57) and urban (HR = 0.56, 95% CI = 0.39-0.82) breast cancer cases.

Conclusion: Screening mammography usage was associated with better overall survival regardless of place of residence. Removing barriers and improving information regarding breast cancer screenings are needed in both rural and urban settings in Utah to increase mammography usage, with the overall goal of increasing early detection and outcomes of breast cancer.

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