Table 1 Patient demographics and risk factors in short and standard LOS groups

Revision TAA

8.7%

(49/562)

9.8%

(57/579)

0.513

 Male

58.4%

(328/562)

45.1%

(261/579)

< 0.001*

 Female

41.6%

(234/562)

54.9%

(318/579)

 Asian

0.9%

(5/562)

0.3%

(2/579)

0.281

 Black or African American

2.1%

(12/562)

3.6%

(21/579)

0.133

 Hispanic

2.7%

(15/562)

2.9%

(17/579)

0.785

 White

83.8%

(471/562)

65.8%

(381/579)

< 0.001*

 Other

0.4%

(2/562)

0.3%

(2/579)

> 0.999

Unknown/not reported

10.1%

(57/562)

26.9%

(156/579)

< 0.001*

 Under 50

8.0%

(45/562)

7.9%

(46/579)

0.969

 Between 50 and 59

26.0%

(146/562)

20.9%

(121/579)

0.043*

 Between 60 and 69

38.8%

(218/562)

38.5%

(223/579)

0.924

 Between 70 and 79

23.8%

(134/562)

26.8%

(155/579)

0.256

 80 and over

3.4%

(19/562)

5.9%

(34/579)

0.046*

 Underweight

0.5%

(3/562)

1.0%

(6/579)

0.507

 Normal

11.9%

(67/562)

14.9%

(86/579)

0.146

 Overweight

39.1%

(220/562)

31.8%

(184/579)

0.009*

 Obese class I

26.9%

(151/562)

28.2%

(163/579)

0.627

 Obese class II

14.6%

(82/562)

16.9%

(98/579)

0.279

 Obese class III

6.9%

(39/562)

7.3%

(42/579)

0.836

 Diabetes

10.5%

(59/562)

14.3%

(83/579)

0.050*

 Smoker

10.0%

(56/562)

6.2%

(36/579)

0.020*

 COPD

2.3%

(13/562)

2.4%

(14/579)

0.907

 Congestive heart failure

0.2%

(1/562)

0.2%

(1/579)

> 0.999

 Hypertension

55.0%

(309/562)

56.1%

(325/579)

0.696

 Dialysis

0.0%

(0/562)

0.3%

(2/579)

0.500

 Chronic steroid use

4.1%

(23/562)

6.0%

(35/579)

0.133

 Class 1 (no disturbance)

6.0%

(34/562)

3.4%

(20/579)

0.039*

 Class 2 (mild disturbance)

60.5%

(340/562)

51.6%

(299/579)

0.003*

 Class 3 (severe disturbance)

32.2%

(181/562)

43.4%

(251/579)

< 0.001*

 Class 4+ (life threatening)

1.3%

(7/562)

1.6%

(9/579)

0.657