Table 3 Results of multivariate logistic regression analysis of risk factors for refracture after vertebroplasty

Risk factor

coefficient

error

value

P value

ratio

Lower limit

Upper limit

Age

3.517

0.172

70–79 vs. <70

-0.813

0.501

2.626

0.105

0.444

0.166

1.186

≥ 80 vs. <70

0.023

0.460

0.002

0.961

1.023

0.415

2.522

BMD

13.269

0.004

≤-3.9 vs. >-1

2.012

1.134

3.150

0.076

7.476

0.811

68.958

-3.9– -2.5 vs. >-1

1.676

1.099

2.327

0.127

5.346

0.620

46.066

-2.5 – -1 vs. >-1

0.149

1.154

0.017

0.897

1.161

0.121

11.138

Leakage of bone cement (No)

1.951

0.393

24.626

< 0.001

7.033

3.255

15.197

Shape of bone cement (H)

1.419

0.407

12.133

< 0.001

4.132

1.860

9.180

Dosage of bone cement

1.713

0.425

4–6 ml vs. <4 ml

-1.110

1.147

0.936

0.333

0.330

0.035

3.121

>6 ml vs. <4 ml

-0.463

0.424

1.190

0.275

0.630

0.274

1.446