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Table 3 Mean increases in creatinine and cystatin C on days 2, 4 and 10 compared with day 0, in the two groups

From: N-acetylcysteine does not prevent contrast nephropathy in patients with renal impairment undergoing emergency CT: a randomized study

  Placebo NAC P-value
(n = 58) (n = 52)
Day 2    
  Creatinine −3.60 ± 35.84 −3.66 ± 38.69 0.96
  Cystatin C −0.02 ±0.43 0.06 ± 0.44 0.30
Day 4    
  Creatinine −8.25 ± 65.62 −8.37 ± 36.52 0.37
  Cystatin C −0.04 ± 0.57 −0.04 ± 0.41 0.30
Day 10    
  Creatinine −14.94 ± 75.53 −16.53 ± 25.23 0.25
  Cystatin C −0.12 ± 0.54 −0.07 ± 0.34 0.27
Peak increase    
  Creatinine 9.38 ± 70.91 4.63 ± 38.14 0.54
  Cystatin C 0.06 ± 0.56 0.17 ± 0.43 0.07