ArticleMedical principles and practice : international journal of the Kuwait University, Health Science Centre2023
The New Coronavirus Pandemic and the Trend of Breast Cancer Diagnosis according to Age-Group: Total and Interrupted Time Series Study.
Article in Medical principles and practice : international journal of the Kuwait University, Health Science Centre, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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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.
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Who cites it
2 citing papers in PubMed, 3 citations in OpenAlex.
- Barriers and facilitators of the implementation of mammography screening in the Brazilian public health system: scoping review.BMC public health · 2025Article
- The negative impact of the COVID-19 pandemic on breast cancer tackle in Brazil's public and private healthcare system: time series study between 2014 and 2022.BMC health services research · 2024Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThere is a lack of studies evaluating the COVID-19 pandemic effect on breast cancer detection according to age-group. This study aimed to assess the pandemic impact on the trend of mammograms, breast biopsies, and breast cancer stage at diagnosis according to age-group.
methodsThis was an ecological time series study by inflection point regression model. We used data from women aged between 30 and 49, 50 and 69, and 70 years or more available in an open-access dataset of the Brazilian public healthcare system (2017-2021). We analyzed the trend of the variables in the pre-pandemic and the pandemic effect on the total time series.
resultsThe decreasing or stationary trend of mammograms in the pre-pandemic has changed to a decreasing trend in the total time series in all age-groups. Before the pandemic, the increasing trend of breast biopsies has changed to stationary in the total time series in all age-groups. The increasing trend of tumors at stages 0 to II in the pre-pandemic has changed to decreasing or stationary in the total time series. Finally, the increasing trend of tumors at stage III or IV remained increasing in the total time series in all age-groups.
conclusionThe pandemic has changed the stationary or increasing trend to a decreasing or stationary trend of mammograms, breast biopsies, and tumors at stages 0 to II but has not influenced the increasing trend of tumors at stages III and IV in all age-groups.
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Registered trials
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