Table 2.
RR of loss of primary functional patency (PFP) from any cause in patients with AVFs
| Variable | Number with Characteristic, % (ratio) | Incidence of PFP Loss among Patients with Characteristic, % (ratio) | Incidence of PFP Loss among Patients without Characteristic, % (ratio) | RR (95% CI) |
|---|---|---|---|---|
| Age ≥65 years | 64 (537/831) | 12 (66/537)) | 5 (15/294) | 2.4 (1.4 to 4.1)a |
| Diabetes | 49 (404/831) | 14 (57/404) | 5 (24/427) | 2.5 (1.6 to 4.0)a |
| Hypertension | 60 (496/831) | 13 (64/496) | 5 (17/335) | 2.5 (1.5 to 4.3)a |
| Peripheral vascular disease | 33 (274/831) | 16 (44/274) | 7 (37/557) | 2.4 (1.6 to 3.6)a |
| Smoking | 46 (378/831) | 16 (61/378) | 4 (20/453) | 3.7 (2.2 to 5.9)a |
| Anatomical location (forearm) | 31 (255/831) | 19 (48/255) | 6 (33/576) | 3.3 (2.2 to 5.0)a |
| Initial IABF (<500 ml/min) | 14 (116/831) | 51 (59/116) | 3 (22/715) | 16 (11 to 26)a |
a
P < 0.001; variables with no significant P value are not shown in table.