Table 2.
Cox Proportional Hazards Analysis of Factors affecting Primary Fistula Patency
| Covariate | Hazard Ratio | 95%Conf-L | 95%Conf-U | P Value |
|---|---|---|---|---|
| Age | 1.0 | 1.0 | 1.0 | 0.718 |
|
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| Comorbidities | ||||
|
| ||||
| Hypertension | 1.3 | 0.1 | 13.1 | 0.798 |
| Diabetes Mellitus | 1.1 | 0.6 | 2.0 | 0.739 |
| Current Smoking | 0.9 | 0.5 | 1.6 | 0.669 |
| Current Dialysis | 1.1 | 0.6 | 2.1 | 0.718 |
| Heart disease (CHF or CAD) | 1.0 | 0.5 | 1.8 | 0.899 |
| Pulmonary Disease | 0.9 | 0.5 | 1.6 | 0.656 |
| Cancer | 1.1 | 0.5 | 2.2 | 0.859 |
|
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| Preoperative Labs | ||||
|
| ||||
| Albumin | 0.9 | 0.7 | 1.1 | 0.35 |
| Creatinine | 1.0 | 0.8 | 1.1 | 0.528 |
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| Preopeartive Measures | ||||
|
| ||||
| BMI | 1.0 | 1.0 | 1.0 | 0.949 |
| LVEF (%) | 1.0 | 1.0 | 1.0 | 0.606 |
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| Medications | ||||
|
| ||||
| ASA | 0.9 | 0.5 | 1.6 | 0.775 |
| Antiplatelet | 0.5 | 0.1 | 2.4 | 0.419 |
| Anticoagulated | 1.0 | 0.5 | 2.0 | 0.941 |
| Statin | 1.2 | 0.6 | 2.1 | 0.631 |
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| Surgical Variables | ||||
|
| ||||
| Site-Upper arm | 0.6 | 0.3 | 1.1 | 0.076 |
| Side | 1.0 | 0.5 | 2.0 | 0.901 |