Table 2.
Risk factors for primary patency loss
| |
|
Fistula |
Graft |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
N=727 hazard ratio (95% CI) |
N=146 hazard ratio (95% CI) |
|||||||||
| Crude | Adjusted | Crude | Adjusted | |||||||
| Age* (years) |
≥65 versus <65 |
1.3 |
(1.1-1.7) |
1.3 |
(1.0-1.7) |
1.1 |
(0.7-1.7) |
1.1 |
(0.7-1.7) |
|
| Sex† |
Female versus Male |
1.5 |
(1.2-2.9) |
1.5 |
(1.2-1.9) |
0.7 |
(0.5-1.1) |
0.7 |
(0.5-1.1) |
|
| BMI‡ (kg/m2) |
≥25 versus <25 |
1.0 |
(0.8-1.2) |
0.9 |
(0.7-1.1) |
0.8 |
(0.5-1.3) |
0.8 |
(0.5-1.3) |
|
| Primary kidney disease§ |
Diabetes mellitus |
2.1 |
(1.6-2.9) |
2.0 |
(1.4-2.7) |
1.4 |
(0.8-2.5) |
1.2 |
(0.7-2.1) |
|
| Glomerulonephritis |
0.8 |
(0.6-1.3) |
0.9 |
(0.6-1.3) |
1.1 |
(0.4-3.1) |
1.2 |
(0.4-3.5) |
||
| Vascular disease |
1.0 |
(0.8-1.4) |
0.9 |
(0.7-1.3) |
0.9 |
(0.5-1.5) |
0.7 |
(0.4-1.2) |
||
| |
Others |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
|
| Cardiovascular disease¶ |
Yes versus No |
1.7 |
(1.4-2.2) |
1.7 |
(1.3-2.2) |
1.8 |
(1.2-2.8) |
1.8 |
(1.1-2.9) |
|
| Prior catheter use** |
Yes versus No |
1.9 |
(1.5-2.4) |
1.9 |
(1.5-2.4) |
2.2 |
(1.4-3.4) |
2.1 |
(1.3-3.4) |
|
| Systolic blood pressure** |
Low |
<139 |
0.9 |
(0.7-1.2) |
0.9 |
(0.7-1.2) |
1.7 |
(1.0-2.9) |
1.5 |
(0.8-2.6) |
| (mmHg) |
Median |
139-155 |
1.0 |
(0.8-1.4) |
1.1 |
(0.8-1.4) |
1.0 |
(0.6-1.8) |
1.1 |
(0.6-2.0) |
| |
High |
>155 |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
| GFR** |
>10 |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
|
| (ml/min/1.73 m2) |
5-10 |
1.1 |
(0.5-2.3) |
1.0 |
(0.5-2.1) |
0.5 |
(0.1-1.6) |
0.6 |
(0.2-2.1) |
|
| |
<5 |
0.9 |
(0.5-1.9) |
0.9 |
(0.4-1.7) |
0.4 |
(0.1-1.3) |
0.4 |
(0.1-1.4) |
|
| Calcium** (mmol/L), |
Low |
<2.30 |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
| Tertiles |
Median |
2.30-2.49 |
1.3 |
(0.9-1.7) |
1.3 |
(1.0-1.7) |
1.0 |
(0.6-1.8) |
1.1 |
(0.6-1.9) |
| |
High |
>2.49 |
1.0 |
(0.8-1.4) |
1.0 |
(0.8-1.4) |
1.4 |
(0.8-2.3) |
1.5 |
(0.9-2.5) |
| Phosphorus** (mmol/L), |
Low |
<1.57 |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
| Tertiles |
Median |
1.57-2.02 |
0.9 |
(0.7-1.2) |
0.9 |
(0.7-1.2) |
0.7 |
(0.4-1.2) |
0.8 |
(0.4-1.3) |
| |
High |
>2.02 |
0.9 |
(0.7-1.2) |
0.9 |
(0.7-1.2) |
0.9 |
(0.5-1.5) |
0.9 |
(0.5-1.5) |
| Cholesterol** (mmol/L), |
Low |
<4.20 |
1 |
(reference) |
1 |
reference) |
1 |
(reference) |
1 |
(reference) |
| Tertiles |
Median |
4.20-5.10 |
0.7 |
(0.5-0.9) |
0.7 |
(0.5-1.0) |
0.9 |
(0.5-1.6) |
0.9 |
(0.5-1.6) |
| |
High |
>5.10 |
0.8 |
(0.6-1.1) |
0.8 |
(0.6-1.1) |
0.7 |
(0.4-1.2) |
1.0 |
(0.5-1.7) |
| Albumin** (g/L), |
Low |
<35.0 |
1.8 |
(1.3-2.4) |
1.5 |
(1.1-2.1) |
3.1 |
(1.7-5.5) |
2.4 |
(1.3-4.5) |
| Tertiles |
Median |
35.0-38.9 |
1.3 |
(1.0-1.8) |
1.2 |
(0.9-1.7) |
2.1 |
(1.1-4.0) |
2.4 |
(1.2-4.6) |
| |
High |
>38.9 |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
| hsCRP** (mg/L), |
Low |
<2.95 |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
1 |
(reference) |
| Tertiles |
Median |
2.95-9.94 |
1.1 |
(0.7-1.6) |
1.1 |
(0.7-1.6) |
2.5 |
(1.1-5.5) |
2.6 |
(1.0-6.5) |
| |
High |
>9.94 |
1.6 |
(1.1-2.4) |
1.6 |
(1.1-2.3) |
2.5 |
(1.1-5.6) |
2.7 |
(1.2-6.3) |
| Fetuin-A** (g/L), Tertiles |
Low |
<0.55 |
1.9 |
(1.3-2.9) |
1.9 |
(1.3-2.9) |
3.6 |
(1.4-6.7) |
3.6 |
(1.7-7.4) |
| Median |
0.55-0.64 |
1.5 |
(1.0-2.3) |
1.5 |
(1.0-2.3) |
3.1 |
(1.8-7.3) |
3.3 |
(1.5-7.5) |
|
| High | >0.64 | 1 | (reference) | 1 | (reference) | 1 | (reference) | 1 | (reference) | |
*Adjusted for sex, †Unadjusted, ‡Adjusted for age, sex, primary kidney disease, and cardiovascular disease, §Adjusted for age, sex, BMI, and cardiovascular disease, ¶Adjusted for age, sex, BMI, and primary kidney disease, **Adjusted for age, sex, BMI, primary kidney disease, and cardiovascular disease.