Incidence of CIN in the predefined subgroups
| Number | N-acetylcysteine | Placebo | OR | 95% CI | p Value | |
|---|---|---|---|---|---|---|
| CI, confidence interval; OR, odds ratio. | ||||||
| Diabetes mellitus | 81 | 10.0% | 9.8% | 1.02 | 0.27 to 4.42 | 1.00 |
| No diabetes mellitus | 75 | 10.8% | 10.5% | 1.03 | 0.23 to 4.46 | 1.00 |
| Creatinine ⩾132.6 μmol/l | 46 | 15.4% | 20.0% | 0.72 | 0.15 to 3.35 | 0.71 |
| Creatinine <132.6 μmol/l | 110 | 7.8% | 6.8% | 1.17 | 0.27 to 4.93 | 1.00 |
| Contrast ⩽1.5 ml/kg | 96 | 11.4% | 9.6% | 1.20 | 0.32 to 4.46 | 1.00 |
| Contrast >1.5 ml/kg | 60 | 9.4% | 11.5% | 0.79 | 0.14 to 4.30 | 1.00 |