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. 2021 Jun 17;267:132–142. doi: 10.1016/j.jss.2021.05.023

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Fig 1 - — Rate of perforated appendicitis by month, pre-COVID (2019) versus COVID-era (2020). There were no statistically significant differences by month. P values as follows: March to April, P = 0.77; April to May, P = 0.29; May to June, P = 1.00; June to July, P = 0.67; July to August, P = 0.68; August to September, P = 0.77.