Publication date: Jul 07, 2025
This study aimed to investigate the COVID-19 impact on invasive breast cancer incidence and one-year survival in Ireland. Anonymised aggregate population data from the National Cancer Registry Ireland were used to examine incidence between 2014 and 2020 and differences in the distribution of clinical characteristics using chi-squared tests. Negative binomial regression examined the association between incidence and year of diagnosis. One-year survival was examined by year of diagnosis using Cox proportional hazards regression modelling. For 2020, the age-standardised incidence rate (ASR, per 100,000 females) was 131. 9, compared to 163. 9 for 2019. In 2020, the incidence rate significantly declined (IRR = 0. 41, 95 % CI = 0. 22, 0. 75) relative to 2019. Fewer cases presented through organised screening (-62. 3 %), while similar or increased numbers presented with symptoms (0. 1 %) and via other methods (9. 0 %) respectively in 2020, compared to 2019. Significant differences were observed in case distribution by ER status (p = 0. 02) and stage (p
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| Concepts | Keywords |
|---|---|
| Females | Breast cancer |
| Ireland | COVID-19 |
| Pandemic | Incidence |
| Survival |
Semantics
| Type | Source | Name |
|---|---|---|
| disease | MESH | COVID-19 pandemic |
| disease | MESH | breast cancer |
| pathway | KEGG | Breast cancer |
| disease | MESH | Cancer |