Table 1 Characteristics of primary and secondary AGI in critically ill patients

Age, years

61 (42–72)

70 (55–81)

66 (48–79)

<0.001

Male, no. (%)

67 (67%)

123 (67.6%)

190 (67.4%)

0.921

BMI (kg/m²)

23.3 (20.9–25.8)

23.4 (21.2–24.7)

23.3 (21.2–25.0)

0.776

APACHE II score

15 (9–20)

18 (13–25)

17.0 (12–23)

<0.001

SOFA score

5 (3–8)

6 (4–10)

6 (4–9)

0.016

 AP

36

 Peritonitis

22

 Abdominal surgery or trauma

42

 Pneumonia

49

 Non-abdominal surgery or trauma

32

 Post-resuscitation

20

 Shock

51

 Sepsis

30

 Hypertension, no. (%)

40 (40%)

95 (52.2%)

145 (51.4%)

0.050

 Diabetes, no. (%)

20 (20%)

52 (28.6%)

72 (25.5%)

0.114

 CHF, no. (%)

4 (4%)

32 (17.6%)

36 (12.8%)

0.001

 CVD, no. (%)

3 (3%)

35 (19.2%)

38 (13.5%)

<0.001

 COPD, no. (%)

3 (3%)

29 (15.9%)

32 (11.3%)

0.001

 CKD, no. (%)

4 (4%)

19 (10.4%)

23 (8.2%)

0.059