Table 3 Cox models for time to first fistula placement, Brazil, 2000-2004.
No Frailty | Frailty | |||||
|---|---|---|---|---|---|---|
Explanatory variables | Hazard-risk | 95% CI | p-value | Hazard-risk | 95% CI | p-value |
Individuals | ||||||
Age | 0.99 | 0.99-1.00 | * | 0.99 | 0.99-1.00 | * |
Cause of Chronic Renal Disease † | ||||||
Diabetes Mellitus | 1.02 | 0.98-1.07 | 0.34 | 1.01 | 0.96-1.06 | 0.68 |
Hypertension and Cardiovascular Diseases | 0.94 | 0.90-0.99 | * | 0.94 | 0.90-0.98 | * |
Undetermined and others | 0.91 | 0.88-0.95 | * | 0.91 | 0.87-0.95 | * |
City of residence † | ||||||
Interior | 0.91 | 0.89-0.94 | * | 0.92 | 0.90-0.95 | * |
Region of residence† | ||||||
South | 0.85 | 0.82-0.88 | * | 0.83 | 0.80-0.87 | * |
Midwest | 0.88 | 0.82-0.93 | * | 0.88 | 0.83-0.94 | * |
North | 0.89 | 0.83-0.95 | * | 0.88 | 0.83-0.94 | * |
Northeast | 0.91 | 0.89-0.94 | * | 0.91 | 0.88-0.94 | * |
Renal units | ||||||
Type of renal unit (frailty variable) | ||||||
Likelihood Ratio Test | 398.8 | 546 | ||||
Frailty variance | - | 0.55 | ||||