Figure 3.

Composite perinephric hematoma proportion was 11% (95% confidence interval, 7% to 17%). Forest plot of studies assessing for perinephric hematoma after ultrasound-assisted percutaneous kidney biopsy. The studies by Kersnik Levart et al. (23), Simckes et al. (7), and Riccabona et al. (24) in Figure 2 seemed significantly different from the other studies, with much higher percentages of perinephric hematoma; they were removed, and analysis was repeated.