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Table 3 Cox regression analysis of reoperation before PSM and after PSM

From: Essential role of reliable reduction quality in internal fixation of femoral neck fractures in the non-elderly patients—a propensity score matching analysis

  

Before PSM

After PSM

B

Ward

P

OR

95.0% of OR

B

Ward

P

OR

95.0% of OR

Lower limit

Upper limit

Lower limit

Upper limit

Reduction quality

Perfect reduction

-1.53

14.84

 < 0.001

0.22

0.1

0.47

-1.90

10.57

0.001

0.15

0.048

0.47

Imperfect reduction

   

1

  

0

  

1

  

Fracture site

Transcervical

-0.25

0.35

0.55

0.78

0.35

1.75

0.83

2.08

0.15

2.29

0.74

7.08

Substrate

-1.58

2.35

0.13

0.21

0.028

1.55

-13.88

0.001

0.98

0

0

0

Subcapital

0

  

1

  

0

  

1

  

Garden Classification

III

0.51

0.21

0.65

1.67

0.19

15.07

-

-

-

-

-

-

IV

1.50

2.02

0.16

4.47

0.57

35.29

-

-

-

-

-

-

II

0

  

1

  

-

-

-

-

-

-

Age

0.032

3.81

0.051

1.03

1

1.07

0.041

3.7

0.054

1.04

0.99

1.09