TABLE 8.

Comparing meta-analysis of NAC treatment as a prevention method for contrast associated acute kidney injury.

Author of metanalysis	Number of RCTs included	CI-AKI incidence (RR)	Dialysis or mortality incidence
Ali-Hasan-Al-Saegh et al. (98)	49	21 % lower risk of CIN than the control group	Remains unchanged
Xu et al. (97)	47	24 % lower risk of CIN than the control group	Remains unchanged

RR, relative risk reduction; RCT, randomised clinical trial; NAC, N-acetylcysteine; RR, risk reduction in%.