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Table 3 Patients’ demographic data

From: Midterm outcome after posterior stabilization of unstable Midthoracic spine fractures in the elderly

Parameter

Study population (n = 59)

Survivors (n = 38)

Non-survivors (n = 21)

p-value

Mean

Std

mean

Std

mean

Std

Age

76.9

6.3

75.3

5.6

79.6

6.8

0.01

Female gender [%]

51

55.3

42.9

0.37

Fracture location

6.9

2.0

6.9

2.1

6.9

1.8

0.99

Classification [OF]

4.1

0.7

4.1

0.7

4.1

0.7

0.93

ASA score

2.5

0.5

2.4

0.8

2.7

0.5

0.02

BMI [kg/m2]

27.0

4.3

27.2

4.3

26.6

4.5

0.63

Trauma mechanism

1.4

1.1

1.5

1.1

1.2

1.0

0.35

Duration surg [min]

142

46.2

134.8

40.8

154.8

53.8

0.16

Stabilized segments

4.3

1.4

4.2

1.6

4.4

1.0

0.46

Min. inv. Approach [%]

54.2

57.9

47.6

0.08

Adjacent injuries [%]

42.4

47.4

33.3

0.30

Thoracic cage inj [%]

22.0

28.9

9.5

0.06

Diabetes mellitus [%]

25.4

28.9

19.0

0.40

Renal insuffic. [%]

30.5

26.3

38.1

0.37

Heart insuffic. [%]

40.7

39.5

26.3

0.36

COPD [%]

13.6

7.9

23.8

0.04

  1. Std Standard deviation; Fracture location: 3: thoracic vertebral body (TVB) 3: 4: TVB 4; 5: TVB 5; 6: TVB 6; 7: TVB 7; 8: TVB; 9: TVB 9; 10: TVB 10; Classification: 1: OF 1; 2: OF 2; 3: OF 3; 4: OF 4; 5: OF 5; ASA:; BMI Body mass index; Trauma mechanism: 0: not memorable; 1: low energy; 2: moderate energy; 3: high energy; surg: surgery; min: minutes; min. Inv. approach: Minimal invasive approach; inj: injury;insuffic.: insufficiency; COPD: Chronic obstructive pulmonary disease