ArticleNPJ breast cancer2021
Effectiveness of the Korean National Cancer Screening Program in reducing breast cancer mortality.
Article in NPJ breast cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
22 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Developing and validating key performance indicators for breast, cervical, and colorectal cancer screening programs: a literature review and Delphi survey.Frontiers in public health · 2025Pooled it
- Screening for breast cancer: a systematic review update to inform the Canadian Task Force on Preventive Health Care guideline.Systematic reviews · 2024Pooled it
- Pan-Asian adapted ESMO Clinical Practice Guidelines for the diagnosis, treatment and follow-up of patients with early breast cancer.ESMO open · 2024Guideline
- Breast cancer screening and early diagnosis in China: a systematic review and meta-analysis on 10.72 million women.BMC women's health · 2024Pooled it
- Breast Cancer Screening Programs in China: Implementation, Challenges, and Future Perspectives.Korean journal of radiology · 2026Review
- Dienogest use and the risk of breast and gynecologic cancers: A nationwide population-based study.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026Article
- A cost-effective breast cancer screening strategy for Urban China: Findings from a Shenzhen-based modeling study.PloS one · 2026Article
- Current Status of the National Cancer Screening Program in Korea: History, Achievements, and Future Directions.Journal of preventive medicine and public health = Yebang Uihakhoe chi · 2025Article
- Trends in Cancer-Screening Rates in Korea: Findings from the National Cancer Screening Survey, 2004-2023.Cancer research and treatment · 2025Article
- Temporal trends and future projections of six major cancers among women of childbearing age in northeast Asia: analysis of data from the global burden of disease study 2021.Frontiers in oncology · 2025Article
- Socioeconomic Disparities in Six Common Cancer Survival Rates in South Korea: Population-Wide Retrospective Cohort Study.JMIR public health and surveillance · 2024Article
- Identification of VWA5A as a novel biomarker for inhibiting metastasis in breast cancer by machine-learning based protein prioritization.Scientific reports · 2024Article
- Impact of health disparities on national breast cancer screening participation rates in South Korea.Scientific reports · 2023Article
- Predictors of surgery choices in women with early-stage breast cancer in China: a retrospective study.BMC cancer · 2023Article
- Multi-MicroRNA Analysis Can Improve the Diagnostic Performance of Mammography in Determining Breast Cancer Risk.The breast journal · 2023Article
- Estimating Age-Specific Mean Sojourn Time of Breast Cancer and Sensitivity of Mammographic Screening by Breast Density among Korean Women.Cancer research and treatment · 2023Article
- Projection of Cancer Incidence and Mortality From 2020 to 2035 in the Korean Population Aged 20 Years and Older.Journal of preventive medicine and public health = Yebang Uihakhoe chi · 2022Article
- Breast Cancer in Asia: Incidence, Mortality, Early Detection, Mammography Programs, and Risk-Based Screening Initiatives.Cancers · 2022Review
- Article
- Effect of mammography screening on the long-term survival of breast cancer patients: results from the National Cancer Screening Program in Korea.Epidemiology and health · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
Abstract
High incidences of breast cancer (BC) are reported in Asian women in their forties, and it is not clear whether mammographic screening reduces mortality among them. This study evaluated the effect of BC screening on mortality in Korea. We conducted a nationwide prospective cohort study of women invited to the Korean National Cancer Screening Program (KNCSP) between 2002 and 2003 (N = 8,300,682), with data linkage to the Korea Central Cancer Registry and death certificates through 2014 and 2015, respectively. Exposure to mammographic screening was defined using a modified never/ever approach. The primary study outcome was adjusted mortality rate ratio (MRR) for BC among screened and non-screened women estimated by Poisson regression. An adjusted MRR for all cause-death other than BC was examined to account for selection bias in the cohort. BC incidence rates for screened and non-screened women were 84.41 and 82.88 per 100,000 women-years, respectively. BC mortality rates for screened and non-screened women were 5.81 and 13.43 per 100,000 women-years, respectively, with an adjusted MRR for BC of 0.43 (95% CI, 0.41-0.44). The adjusted MRR for all-cause death excluding BC was 0.52 (95% CI, 0.52-0.52). The greatest reduction in BC mortality was noted for women aged 45-54 years, and there was no observable reduction in mortality after the age of 70 years. In conclusion, the KNCSP has been effective in reducing BC mortality among Korean women aged 40-69 years.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.