Forest plots of overall complicationsusing a fixed-effect model.

<p>Studies are sub-grouped according to pure laparoscopic nephrectomy and hand-assisted laparoscopic nephrectomy. Squares indicate study-specific risk estimates (size of the square reflects the study-specific statistical weight, i.e., the inverse of the variance); horizontal lines indicate 95% confidence intervals (CIs); diamonds indicate summary risk estimate with its corresponding 95% confidence interval.