Figure 5.

The mean difference in blood urea nitrogen (BUN) levels between exposed and non-exposed participants. WMD: Weighted Mean Difference (mg/dL), % Weighted: the impact proportion of each study to the pooled effect, CI: Confidence Interval (mg/dL), Black diamond symbol: point estimate for each study, White diamond symbol: pooled WMD in each subgroup or all groups, Solid line in the middle of the graph at 0: no difference in WMD between the two groups, Dashed line: pooled WMD between the two groups.