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Hye Young Shin 1 Article
Trends in breast cancer screening rates among Korean women: results from the Korean National Cancer Screening Survey (KNCSS), 2005-2020
Soo Yeon Song, Yun Yeong Lee, Hye Young Shin, Bomi Park, Mina Suh, Kui Son Choi, Jae Kwan Jun
Epidemiol Health. 2022;e2022111.   Published online November 24, 2022
DOI: https://doi.org/10.4178/epih.e2022111    [Accepted]
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Abstract
Objectives
Since 2002, the Korean government has provided breast cancer screening as part of the National Cancer Screening Program. This study reported the screening rate trends among Korean women from 2005 to 2020, including organized and opportunistic screening for breast cancer.
Methods
Data from the Korean National Cancer Screening Survey, an annual cross-sectional nationwide survey, was collected using a structured questionnaire between 2005 and 2020. The study population included 23,702 women aged 40–74 years with no history of cancer. We estimated the screening rate with the current recommendation of biennial mammographic screening for breast cancer. In addition, a joinpoint trend analysis was performed for breast cancer screening rates using subgroup analysis.
Results
In 2020, the breast cancer screening rate was 63.5%, which showed an annual increase of 7.72% (95% confidence interval 5.53% to 9.95%) between 2005 and 2012, followed by non-significant trends thereafter. In particular, a significant decrease in the breast cancer screening rate was observed in the subgroups aged 50–59 years old, with 12–15 years of education, and living in rural areas.
Conclusions
Although there has been substantial improve in breast cancer screening rates in Korean women, the recent trend has flattened. Therefore, efforts are continually required to find out unmet subgroups and solve barriers for uptake of breast cancer screening.
Summary
Korean summary
Key Message

Epidemiol Health : Epidemiology and Health