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Table 2 Distributions of non-categorical data

From: Does sodium bicarbonate infusion really have no effect on the incidence of acute kidney injury after cardiac surgery? A prospective observational trial

 

Control group

NaHCO 3 group

 
 

Median

IQR

Range

Median

IQR

Range

P -value

Age, years

70

62, 74

34 to 84

70

60, 74

42 to 88

0.64

Creatinine, mg/dl

0.96

0.81, 1.18

0.5 to 2.1

0.97

0.81, 1.13

0.54 to 4.57

0.26

Score points

2

1.0, 3.5

0 to 10

2

1.0, 4.0

0 to 10

0.86

ACC time, minutes

74.5

61.5, 97.5

17 to 214

69.5

52, 91

29 to210

0.03

CPB time, minutes

116

94, 147.5

42 to 310

112.5

89, 138

45 to 313

0.06

fhb at baseline, mg/dl

9

8.0, 11.0

4.0 to 93

9

8.0, 11.0

5.0 to 55

0.18

fhb after CPB, mg/dl

55

40,73

7.0 to 187

45

34, 62

11 to 130

0.001

  1. Distributions of non-categorical data, which are expressed as median, IQR, and range. Tests of the distributions of age, cardiopulmonary bypass (CPB) time, concentration of serum creatinine, and concentration of free hemoglobin (fhb) at baseline and at the end of CPB were performed by logistic regression. The Mann-Whitney U-test was used to evaluate the distribution of score points. The fhb concentration after CPB was significantly lower in the NaHCO3 group, and the aortic cross-clamping (ACC) time was significantly shorter.