Supplemental Figure 6. Adjusted rate ratios comparing female breast cancer death rates during the COVID-19 period (March-December 2020) to the pre-COVID-19 period (January 2011-February 2020) by month by age group. Points represent adjusted rate ratios and lines represent 95% confidence intervals. Models adjusted for linear calendar time in months, and seasonal patterns with sine and cosine terms.
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Shiels et al. (2024) studied this question.
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