Fig. 5
From: Prevalence and impact of acute renal impairment on COVID-19: a systematic review and meta-analysis
a Forest plot of average AKI incidence in critical COVID-19 cases. b Forest plot of average AKI incidence in severe COVID-19 cases. c Forest plot of average AKI incidence in mild/moderate COVID-19 cases. Heterogeneity is defined based on the I2 index calculated. A random effect model is used to pool the average AKI incidence in critical patients, and fixed effect models are used to pool the data of AKI incidence in severe and mild/moderate cases