Table 2 Univariate and multivariate logistic regression analysis of risk factors for delayed discharge of elderly patients with hip fracture

Preoperative waiting time

 ≤ 48 h

Ref

Ref

 > 48 h

10.878(6.566–18.023)

 < 0.001

11.773(6.635,20.889)

 < 0.001

CCI

 ≤ 3

Ref

Ref

 > 4

6.285(4.077,9.689)

 < 0.001

2.734(1.435,5.211)

0.002

Multiple trauma

 No

Ref

Ref

 Yes

1.809(1.182,2.769)

0.006

1.320(0.757,2.302)

1.320

Coronary artery disease

 No

Ref

Ref

 Yes

2.666(1.931,3.681)

 < 0.001

1.053(0.676,1.641)

0.818

Cerebral vascular disease

 No

Ref

Ref

 Yes

2.405(1.516,3.815)

 < 0.001

1.334(0.72,2.471)

0.360

Hemiplegia

 No

Ref

Ref

 Yes

2.124(1.403,3.216)

 < 0.001

1.141(0.629,2.068)

0.664

Heart failure

 No

Ref

Ref

 Yes

3.613(1.616,8.075)

0.002

0.915(0.291,2.874)

0.878

Arrhythmia

 No

Ref

Ref

 Yes

1.830(1.158,2.892)

0.01

1.249(0.687,2.272)

0.466

Chronic lung disease

 No

Ref

Ref

 Yes

3.726(2.150,6.458)

 < 0.001

1.082(0.504,2.322)

0.84

anemia

 No

Ref

Ref

 Yes

7.202(4.850,10.693)

 < 0.001

1.920(1.045,3.529)

0.036

Hypoproteinemia

 No

Ref

Ref

 Yes

5.936(4.205,8.38)

 < 0.001

2.753(1.614,4.696)

 < 0.001

Electrolyte disorder

 No

Ref

Ref

 Yes

6.769(4.421,10.365)

 < 0.001

1.788(0.975,3.278)

0.060

Malignant tumor

 No

Ref

Ref

 Yes

1.370(0.546,3.436)

0.503

Arteriosclerosis of lower limbs

 No

Ref

Ref

 Yes

4.894(3.254,7.359)

 < 0.001

1.775(1.026,3.071)

0.040

Secondary fracture

 No

Ref

Ref

 Yes

8.338(1.671,41.602)

0.010

1.107(0.193)

6.337

Delirium

 No

Ref

Ref

 Yes

3.888(1.760,8.592)

0.001

2.150(0.776,5.956)

0.141