Table 3 Logistic regression analysis
From: Risk factors of early periprosthetic femoral fracture after total knee arthroplasty
Variables | Univariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|---|
Crude OR | 95% CI | p-value | Adjusted OR | 95% CI | p-value | |
Age | 0.83 | 0.76–0.91 | < 0.001* | 0.85 | 0.76–0.94 | 0.002* |
Side | ||||||
-Right | 1 | Reference | 1 | Reference | ||
-Left | 4.06 | 1.29–12.77 | 0.017* | 3.50 | 0.86–14.2 | 0.080 |
Diagnosis | ||||||
-Osteoarthritis | 1 | Reference | 1 | Reference | ||
-Rheumatoid arthritis | 0 | NA | 0.999 | NA | NA | NA |
Dyslipidemia | ||||||
-No | 1 | Reference | 1 | Reference | ||
-Yes | 0.39 | 0.16–0.98 | 0.044* | 0.53 | 0.15–1.87 | 0.325 |
Parkinson disease | ||||||
-No | 1 | Reference | 1 | Reference | ||
-Yes | 0 | NA | 0.999 | NA | NA | NA |
Prosthetic design | ||||||
-Cruciate-retaining | 1 | Reference | 1 | Reference | ||
-Posterior-stabilized | 0 | NA | 0.999 | NA | NA | NA |
Prosthetic band | ||||||
-Zimmer | 1 | Reference | 1 | Reference | ||
-Depuy | 3.28 | 0.91–11.89 | 0.071 | 4.74 | 0.87–25.84 | 0.072 |
-Stryker | 0 | NA | 1.000 | 0 | NA | 1.000 |
-Smith Nephew | NA | NA | 0.999 | NA | NA | 0.999 |
Postoperative lateral distal femoral angle | 1.31 | 1.03–1.69 | 0.030* | 1.17 | 0.84–1.61 | 0.353 |
Distal femoral width | 1.17 | 1.06–1.28 | 0.001* | 1.16 | 0.98–1.36 | 0.085 |
Prosthesis-distal femoral width ratio | 0 | 0.00–0.02 | 0.006* | 0.36 | NA | 0.917 |
Anterior femoral notching | ||||||
-No | 1 | Reference | 1 | Reference | ||
Yes | 0.12 | 0.01–1.34 | 0.084 | 0.12 | 0.00–59.61 | 0.500 |