Table 1 Comparisons of demographic data and surgical descriptions between the mechanical failure-free and mechanical failure groups in the training cohort.

46.6 ± 19.6 [20, 78]

62.9 ± 12.7 [23, 78]

53.2 ± 18.9 [20, 78]

<0.01*

20.2 ± 2.9 [15.2, 28.9]

22.7 ± 4.0 [11.9, 31.6]

21.2 ± 3.6 [11.9, 31.6]

<0.01*

−0.6 ± 1.0 [−3.0, 2.4]

−1.2 ± 0.9 [−3.4, 1.2]

−0.8 ± 1.0 [−3.4, 2.4]

<0.01*

0.04 ± 0.07 [0, 0.36]

0.11 ± 0.13 [0, 0.64]

0.07 ± 0.11 [0, 0.64]

<0.01*

1.0 ± 1.3 [0, 8]

1.9 ± 1.7 [0, 9]

1.4 ± 1.6 [0, 9]

<0.01*

245 ± 84 [89, 495]

282 ± 923 [99, 542]

248 ± 92 [89, 542]

<0.01*

557 ± 379 [80, 2500]

770 ± 551 [150, 3000]

643 ± 467 [80, 3000]

<0.01*

9.1 ± 2.9 [5, 16]

10.0 ± 2.7 [5, 18]

9.5 ± 2.8 [5, 16]

0.01*

36.8 ± 57.0

85.3 ± 65.6

56.6 ± 65.1

<0.01*

22.6 ± 11.5

32.9 ± 22.1

26.9 ± 12.8

<0.01*

20.2 ± 20.8

39.1 ± 23.7

27.7 ± 23.8

<0.01*

7.9 ± 33.1

23.6 ± 35.6

14.3 ± 34.9

<0.01*

18.9 ± 7.8

21.6 ± 8.7

20.0 ± 8.3

0.01*

9.2 ± 11.1

11.8 ± 16.7

10.2 ± 13.6

0.15

5.3 ± 5.3

6.6 ± 6.9

6.0 ± 6.3

0.18

−9.1 ± 9.2

−12.4 ± 8.1

−10.5 ± 9.9

<0.01*

−19.7 ± 10.8

−21.8 ± 15.6

−20.6 ± 13.0

0.20

63.5 ± 53.8

69.0 ± 57.7

65.7 ± 55.4

0.43

−2.6 ± 8.8

4.2 ± 10.0

0.2 ± 9.9

<0.01*

5.2 ± 2.7

5.9 ± 3.3

5.5 ± 3.0

0.07

12.5 ± 40.5

65.3 ± 56.3

34.1 ± 54.2

<0.01*

19.4 ± 8.0

26.6 ± 11.0

22.4 ± 9.9

<0.01*

9.2 ± 13.0

14.6 ± 16.1

11.4 ± 14.5

<0.01*

7.4 ± 6.4

15.0 ± 11.7

11.5 ± 10.3

<0.01*