Fig. 2
From: The ChoCO-W prospective observational global study: Does COVID-19 increase gangrenous cholecystitis?
Box-and-whiskers plot of Clavien-Dindo postoperative complication classification comparing the COVID and the non-COVID patients. The box resembles the 25th percentile and the 75th percentile interquartile range (IQR), while the line within the box resembles the median. p value = Mann–Whitney U test