Skip to main content

Table 5 Univariate analysis of risk factors associated with bone resorption

From: Bone resorption during the first year after implantation of a single-segment dynamic interspinous stabilization device and its risk factors

 

OR (95% CI)

p

Age, y

1 (0.96,1.05)

.926

Gender

Female

1

 

Male

0.3 (0.08,1.15)

.079

BMI, kg/m2

1.22 (0.99,1.49)

.056

Smoking

Never smoked

1

 

Light smokers

0.63 (0.12,3.3)

.589

Severe smokers

0.29 (0.05,1.57)

.150

Osteoporosis

NA

 

Lumbar lordosis,

<50

1

 

≥50

0.14(0.03,0.57)

.006*

L4-5 spinous height

≤20

1

 

20-30

2.57 (0.25,26.24)

.426

30-40

0.36 (0.08,1.64)

.186

≥40

0.86 (0.12,6.01)

.877

L4-5 interspinous height

≤25

1

 

25-30

0.38 (0.06,2.53)

.318

30-35

0.52 (0.08,3.36)

.496

≥35

0.86 (0.05,13.48)

.913

Operating time, h

1.46 (0.37,5.82)

.589

Blood loss, mL

1 (1,1.01)

.261

Hospital stay, d

1.25 (0.98,1.6)

.067

Time wearing brace, mo

≤3

1

 

4-5

2.18 (0.19,25.01)

.531

≥6

1.82 (0.49,6.76)

.372

Time performing low back muscle exercises, mo

0

1

 

≤3

NA

 

3-6

0.77 (0.16,3.74)

.745

≥7

1.03 (0.19,5.51)

.976

  1. BMI, body mass index; OR, odds ratio; CI, confidence interval.
  2. *p <0.05, indicates significantly associated with bone resorption.