Table 4 Bivariate and multivariate regression associated with postoperative delirium

Bivariate Regression of Procedure Type (Reference = THA for Osteoarthritis)

OR

95% CI

p

Hemiarthroplasty

7.101

(5.988, 8.422)

 < 0.001

THA for Proximal Femur Fracture

5.657

(4.155, 7.701)

 < 0.001

Multivariate Regression

OR

95% CI

p

Hemiarthroplasty

2.297

(1.817, 2.902)

 < 0.001

THA for Proximal Femur Fracture

2.777

(1.930, 3.994)

 < 0.001

Fall in the Last 6 Months

0.928

(0.777, 1.109)

0.412

Dementia

4.484

(3.813, 5.272)

 < 0.001

CHF

1.047

(0.821, 1.336)

0.710

Hypertension Requiring Medications

0.946

(0.809, 1.106)

0.487

Dialysis

1.241

(0.676, 2.277)

0.485

General Anesthesia

1.216

(1.045, 1.413)

0.011

Total Hospital Length of Stay Days

1.089

(1.074, 1.103)

 < 0.001