Table 1 The baseline characteristics of participants.

From: Body mass index and mortality after elective open abdominal aortic aneurysm repair in a fifteen year multicenter cohort study

BMI groups

Underweight

Normal

Overweight

Obesity

P-value

Participants(n)

60

1323

1412

583

 

Age (years, mean ± SD)

72.02 ± 6.74

71.19 ± 7.04

70.31 ± 6.79

67.82 ± 6.97

< 0.001

HGB (g/dL, mean ± SD)

132.65 ± 15.05

135.52 ± 15.27

139.21 ± 14.57

141.78 ± 14.35

< 0.001

Weight (kg, mean ± SD)

48.58 ± 6.66

68.76 ± 8.91

83.58 ± 8.79

99.31 ± 12.42

< 0.001

Hight (cm, mean ± SD)

167.70 ± 8.96

173.29 ± 8.56

174.85 ± 7.74

173.97 ± 8.88

< 0.001

Total transfusion (L, median, quartile)

4.10 ± 4.30

3.91 ± 5.51

3.75 ± 5.32

3.95 ± 4.95

0.530

Perioperative Scr(mmol/L, mean ± SD)

88.19 ± 36.86

97.75 ± 63.39

99.91 ± 56.35

95.35 ± 47.20

0.207

Perioperative bleeding (L, median, quartile)

1.41 ± 0.83

1.73 ± 1.25

1.98 ± 1.34

2.35 ± 2.39

< 0.001

Follow-up times(years, median, quartile)

4.13 (2.06–7.20)

4.99 (2.36–7.78)

4.98 (2.48–7.92)

4.82 (2.23–7.74)

0.376

ASA score

    

0.007

1

5 (8.33%)

245 (18.52%)

230 (16.29%)

98 (16.81%)

 

2

41 (68.33%)

815 (61.60%)

903 (63.95%)

334 (57.29%)

 

3

14 (23.33%)

260 (19.65%)

267 (18.91%)

148 (25.39%)

 

4

0 (0.00%)

3 (0.23%)

12 (0.85%)

3 (0.51%)

 

Female

41 (68.33%)

320 (24.19%)

163 (11.54%)

93 (15.95%)

 

Smoking (n.%)

    

< 0.001

Newer

6 (10.00%)

195 (14.74%)

235 (16.64%)

89 (15.27%)

 

Ever

13 (21.67%)

441 (33.33%)

604 (42.78%)

267 (45.80%)

 

Current

41 (68.33%)

687 (51.93%)

573 (40.58%)

227 (38.94%)

 

Anemia(n.%)

19 (31.67%)

408 (30.84%)

349 (24.72%)

107 (18.35%)

< 0.001

DM (n.%)

4 (6.67%)

65 (4.91%)

141 (9.99%)

99 (16.98%)

< 0.001

Hypertension(n.%)

34 (56.67%)

769 (58.13%)

917 (64.94%)

424 (72.73%)

< 0.001

Respiratory disease(n.%)

11 (18.33%)

203 (15.34%)

186 (13.17%)

84 (14.41%)

0.329

Cerebrovascular disease(n.%)

7 (11.67%)

122 (9.22%)

141 (9.99%)

56 (9.61%)

0.863

Cardiac disease(n.%)

12 (20.00%)

383 (28.95%)

516 (36.54%)

225 (38.59%)

< 0.001

Postoperative in-hospital complications

     

Intestinal ischemia(n.%)

3 (5.00%)

51 (3.85%)

53 (3.75%)

24 (4.12%)

0.950

Cardiac complications(n.%)

4 (6.67%)

121 (9.15%)

93 (6.59%)

37 (6.35%)

0.051

Pulmonary complications(n.%)

5 (8.33%)

110 (8.31%)

131 (9.28%)

49 (8.40%)

0.824

Dialysis(n.%)

1 (1.67%)

35 (2.65%)

34 (2.41%)

16 (2.74%)

0.932

Embolus(n.%)

0 (0.00%)

1 (0.08%)

2 (0.14%)

0 (0.00%)

0.791

  1. SD, standard deviation; n, number (%); BMI, body mass index; HGB, hemoglobin concentration; Scr, serum creatinine, diabetes mellitus; ASA, American Society of Anesthesiologists.
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