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Table 2 Incidence Rates per 1000 person years (95% confidence intervals) for outcomes during up to 8 years follow up in adults with or without acute kidney injury (AKI), stratified by body mass index

From: Body mass index and chronic kidney disease outcomes after acute kidney injury: a prospective matched cohort study

 

BMI category

< 20 kg/m2

20–24.9 kg/m2

25–29.9 kg/m2

≥ 30 kg/m2

Incident CKD (n = 201 events)

 No AKI

  Events/total n

2/15

7/75

28/164

29/209

  Rate

31.5 (7.9 to 125.8)

20.0 (9.5 to 42.0)

35.7 (24.7 to 51.7)

29.7 (20.6 to 42.7)

 AKI

  Events

2/11

23/85

30/134

80/233

  Rate

57.6 (14.4 to 230)

71.4 (47.5 to 108)

56.2 (39.3 to 80.3)

94.4 (75.8 to 118)

CKD Progression (n = 64 events)

 No AKI

  Events

1/6

1/50

7/105

11/145

  Rate

44.9 (6.2 to 320)

4.6 (0.6 to 32.6)

14.8 (7.1 to 31.1)

18.4 (10.2 to 33.2)

 AKI

  Events

0/5

9/49

11/89

24/163

  Rate

0

47.1 (24.5 to 90.5)

32.7 (18.1 to 59.1)

38.7 (25.9 to 57.7)

ESRD (n = 58 events)

 No AKI

  Events

2/21

2/125

2/269

6/354

  Rate

24.0 (6.0 to 96.1)

3.5 (0.9 to 13.8)

1.5 (0.4 to 8.1)

3.6 (1.6 to 8.1)

 AKI

  Events

0/16

7/134

13/223

26/396

  Rate

0

12.4 (5.9 to 26.1)

13.7 (8.0 to 23.6)

15.5 (10.5 to 22.7)

Combined CKD event (n = 300 events)

 No AKI

  Events

4/21

10/125

36/269

43/354

  Rate

49.0 (18.4 to 130)

17.7 (9.5 to 33.0)

28.7 (20.7 to 39.7)

27.4 (20.3 to 36.9)

 AKI

  Events

2/16

36/134

48/223

121/396

  Rate

39.0 (9.7 to 155.9)

72.6 (52.3 to 101)

56.4 (42.5 to 74.8)

84.7 (70.9 to 101)

Major Atherosclerotic Cardiovascular Events (MACE n = 129 events)

 No AKI

  Events

2/21

13/125

26/269

28/354

  Rate

24.1 (6.0 to 96.4)

24.3 (14.1 to 41.9)

22.0 (15.0 to 32.3)

18.5 (12.8 to 26.8)

 AKI

  Events

2/21

8/134

25/223

25/396

  Rate

37.8 (9.5 to 151.2)

15.2 (7.6 to 30.5)

28.1 (19.0 to 41.6)

15.4 (10.4 to 22.9)

Death (n = 320 events)

 No AKI

  Events

5/21

18/125

39/269

50/354

  Rate

56.0 (23.3 to 135)

30.9 (19.5 to 49.0)

29.7 (21.7 to 40.6)

30.0 (22.8 to 39.6)

 AKI

  Events

11/16

38/134

60/223

99/396

  Rate

196.5 (109 to 355)

64.9 (47.2 to 89.2)

60.8 (47.2 to 78.4)

56.9 (46.7 to 69.3)