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Table 2 Association of rod fracture risk with demographic characteristics

From: Risk factors for rod fracture after posterior correction of adult spinal deformity with osteotomy: a retrospective case-series

Confounders

Subgroups

Rod(s) fracture

Odds ratio (95 % Cl: min; max)

P(χ2)

Yes

No

Gender

Female

3

47

0.3 (0.07; 1.6)

0.2

Male

4

21

Age

24–59 years

2

33

  
 

60–82 years

5

35

0.4 (0.08; 2.3)

0.3

Ethnicity

Caucasian

6

60

N/A

>0.5

Hispanic

0

4

Refused

1

4

Body mass index (BMI)

>30

2

14

1.2 (0.2; 6.7)

>0.5

≤30

5

41

Previous thoracolumbar surgery

Primary

0

16

N/A

0.3

Reoperation

7

52

Smoking status

Never smoker

3

30

0.9 (0.2; 4.2)

>0.5

Ever smoker

4

35

Pseudarthrosis present at operation

Yes

2

13

1.7 (0.3; 9.7)

>0.5

No

5

55