Supplementary Table II (online only).
Time-varying (nested) model compared with original proportional hazards model for temporary hemodialysis catheter (THDC) failure
| Variable | Original model |
Time-varying model |
||
|---|---|---|---|---|
| HR (95% CI) | P value | HR (95% CI) | P value | |
| Heparin locking | 0.08 (0.01-0.48) | .006 | 0.35 (0.12-0.99) | .049 |
| Systemic anticoagulation | 2.46 (0.32-18.91) | .388 | 1.13 (0.34-3.74) | .842 |
| VTE prophylaxis | ||||
| 7500 vs none | 0.03 (0.001-0.70) | .029 | 0.11 (0.02-0.68) | .018 |
| 7500 vs 5000 | 0.08 (0.01-1.18) | .066 | 0.48 (0.15-1.54) | .213 |
| Age | 0.97 (0.92-1.04) | .385 | 0.96 (0.92-1.01) | .123 |
| Female | 0.25 (0.04-1.61) | .144 | 0.60 (0.20-1.78) | .354 |
| HTN | 1.48 (0.22-10.00) | .685 | 0.94 (0.27-3.31) | .928 |
| BMI > 40 | 1.75 (0.41-7.49) | .452 | 0.79 (0.23-2.69) | .702 |
| DM | 2.86 (0.32-25.46) | .347 | 2.65 (0.66-10.71) | .172 |
| CKD/ESRD | 0.15 (0.01-1.73) | .127 | 0.84 (0.22-3.20) | .801 |
| COPD | 1.69 (0.29-23.87) | .763 | 3.02 (0.49-18.57) | .233 |
| Prehospital anticoagulants | 2.64 (0.29-23.87) | .388 | 0.75 (0.20-2.76) | .659 |
| Femoral insertion | 15.15 (1.63-140.54) | .017 | 5.33 (1.36-20.89) | .017 |
| Right side insertion | 5.19 (0.44-61.51) | .192 | 1.13 (0.31-4.05) | .855 |
BMI, Body mass index; CI, confidence interval; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; DM, diabetes mellitus; ESRD, end-stage renal disease; HR, hazard ratio; HTN, hypertension; VTE, venous thromboembolism.