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Table 2 Multivariate analysis of factors affecting the occurrence of ONHF

From: Osteonecrosis of femoral head in young patients with femoral neck fracture: a retrospective study of 250 patients followed for average of 7.5 years

Index

ß

SE

Wald

P

OR

95%CI

Removal of internal fixation

0.372

0.175

4.871

0.028

1.647

1.105~2.547

Type of fracture (displacement fracture)

0.325

0.135

6.254

0.012

1.398

1.071~1.996

Quality of reduction (dissatisfied)

0.492

0.243

3.968

0.031

1.625

1.008~2.658

BMI (≥ 25)

1.368

0.389

11.327

0.019

4.658

3.658~8.954

ASAS classification (III + IV)

0.462

0.201

2.354

0.037

1.697

1.065~2.634

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X