Figure 1.
Flow diagram of selection process.
Abbreviations: RCT = randomized controlled trial.
Figure 2.
Forest plot of risk ratios (RRs) and 95% confidence intervals (CIs) for the incidence of contrast-induced acute kidney injury in patients assigned to intravenous NAC therapy versus control.
Abbreviations: NAC, N-acetylcysteine; RR, risk ratio; CI, confidence interval.
Table 1.
Meta-regression of Possible Sources of Heterogeneity.