Observed to Expected Ratio, by Cancer Site, Month and Year of Diagnosis
The observed 2020 count was compared to the expected count by ratio (O/E ratio) from March 2020-February 2021. The standard error for the ratio was obtained by the delta method, which was used to determine the p-value and 95% confidence interval for each O/E ratio. Horizontal solid line depicts an O/E ratio of 1.