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Table 4 Univariate and multivariate logistic regression analysis of patients on fixation loosening

From: Compressive buttress compared with off-axial screw fixation for vertical femoral neck fractures in young adults: a prospective, randomized controlled trial

Variables

Univariate logistic regression analysis

Multivariate logistic regression analysis

 

OR (95% CI)

p value

OR (95% CI)

p value

Surgical approach (OPTCS vs CBS)

5.85 (2.54–13.49)

 < 0.001

11.62 (3.57–37.86)

 < 0.001

Gender (Female vs Male)

0.55 (0.26–1.16)

0.114

  

Age

1.04 (1.01–1.07)

0.022

1.01 (0.96–1.06)

0.761

Side (Right vs Left)

1.41 (0.67–2.98)

0.362

  

Smoke (Yes vs No)

3.13 (1.37–7.15)

0.007

4.91 (1.67–14.47)

0.004

Hypertension (Yes vs No)

2.14 (0.98–4.66)

0.055

2.8 (0.79–9.97)

0.111

Diabetes (Yes vs No)

6.61 (2.59–16.88)

 < 0.001

13.65 (3.55–52.48)

 < 0.001

BMI

1.12 (1.01–1.25)

0.04

1.02 (0.88–1.18)

0.819

Causes of injury (Traffic accident vs Fall & Sport & Pedestrian)

2.09 (0.97–4.47)

0.059

3.05 (1.04–8.93)

0.042

Garden classification (Displaced vs Nondisplaced)

0.65 (0.3–1.43)

0.286

  

VN classification (Inclined vs Less-inclined)

0.52 (0.19–1.47)

0.218

  

Infero-posterior comminution (Yes vs No)

0.75 (0.34–1.61)

0.456

  

Time to operation

0.97 (0.49–1.92)

0.924

  

Operation time

1.02 (0.98–1.05)

0.285

  

Blood loss

1.01 (0.99–1.02)

0.306

  
  1. OR: Odds ratio; CI, confidence interval; OPTCS, off-axial partial threaded cannulated screw; CBS, compression buttress screw; BMI, body mass index; VN, vertical of the neck axis