Table 2 Independent prognostic predictors for poor AVF survival with corresponding score points.
| Variable | HRa | 95%CI | P value | Pointb |
|---|---|---|---|---|
| Age (years) | ||||
| <65 | 1.00 | — | — | 0 |
| 65–79 | 1.47 | 1.07–2.03 | 0.019 | 1 |
| ≥80 | 1.70 | 1.07–2.71 | 0.026 | 2 |
| DM | ||||
| No | 1.00 | — | — | 0 |
| Yes | 1.36 | 1.01–1.82 | 0.041 | 1 |
| IHD | ||||
| No | 1.00 | — | — | — |
| Yes | 1.19 | 0.83–1.72 | 0.350 | — |
| Prior CVC placement | ||||
| No | 1.00 | — | — | 0 |
| Yes | 1.91 | 1.42–2.56 | <0.001 | 2 |
aAdjusted for the other variables in the table. bPoint was assigned to each variable according to its HR value and rounded to the nearest integer. AVF: arteriovenous fistula; CI: confidence interval; CVC: central venous catheter; DM: diabetes mellitus; HR: hazard ratio; IHD: ischemic heart disease