Trend analysis of effect of COVID-19 pandemic on breast cancer staging.

Abstract

e18682 Background: COVID-19 Pandemic has impacted the diagnosis and treatment of breast cancer and has been shown to increase the late stage cancer at presentation. Most of studies has made year-wise comparison with 2019 for this conclusion. Same studies have also concluded that there was no difference in treatment duration after the diagnosis. Methods: We conducted an IRB-approved retrospective chart review of 505 (255 in 2018 and 250 in 2019) patients diagnosed with Breast Cancer from January 2018 to December 2019 for pre-COVID era and 206 patients diagnosed from March to December 2020 i.e. COVID era. We compared the race, histology, and stage at presentation. Patients from COVID era were compared with newly diagnosed breast cancer in 2018, 2019 patients individually and together. All the above characteristics. were compared between COVID and Pre-COVID era. Continuous variable was compared by T-test and Categorical variable were compared with details were recorded. Descriptive statistics were used in the analysis. Results: Median age of diagnosis for 2018, 2019, and COVID era was 62 (38-83), 59 (37-80) and 64(39-97) respectively. The proportion of white Race during pre-COVID era was 87.52% compared to 89.32% during the COVID era without any significant difference between all 3 years. For Histology, there was significant difference between proportion of histology between 2019 and 2020 (p-value 0.003) whereas no difference between 2018 and 2020 (p-value – 0.21) or combined pre-COVID and COVID era. Incase of staging, significantly more late stage cancer was seen in the COVID era compared to 2019 but there was no significant difference (p-value – 0.225). Same finding was seen between combined pre-COVID and COVID era (p-value - 0.94). Conclusions: Findings from our study suggest that a longer-term trend analysis is required for to find out the accurate impact of COVID-19 pandemic on breast cancer and cancer in general. A population-based study incorporating data from multicenter and multiple year should be done to assess the real effect of COVDI pandemic.[Table: see text]