Table 2.

Incidence of CIN in different groups according to different definitions of CIN

Groups	Total n=434	Group A* n=149	Group B† n=145	Group C‡ n=140	P
Cr after 48 h	1.99±0.77	2.05±0.81	1.90±0.63	2.00±0.85	0.27
CIN0.5§	8.1% (35)	6.8% (10)	6.9% (10)	10.8% (15)	0.38
CIN0.3||	12.4% (53)	9.7% (14)	13.3% (19)	14.4% (20)	0.44
CIN25%#	8.1% (35)	6.1% (9)	7.6% (11)	10.8% (15)	0.34

*Group A=IV NAC, ^†Group B=Oral NAC, ^‡Group C=Placebo group, ^§CIN0.5=CIN defined by absolute 0.5 mg/dL increase of serum Cr from baseline, ^||CIN0.3=CIN defined by absolute 0.3 mg/dL increase of serum Cr from baseline, ^#CIN25% = CIN defined by relative 25% increase of serum Cr from baseline