Table 3.
Contribution factors to the patency rate
| Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|
| Hazard ratio (95 % CI) | p value | Hazard ratio (95 % CI) | p value | |
| Age (per 1 year) | 1.02 (1.00–1.04) | 0.0607 | ||
| 75 or more years old (vs. <75 years old) | 1.72 (1.02–2.85) | 0.0440* | 2.14 (1.21–3.72) | 0.0093* |
| Female (vs. male) | 1.19 (0.71–1.97) | 0.502 | ||
| DM (vs. without DM) | 1.86 (1.13–3.07) | 0.0145* | 1.82 (1.11–3.02) | 0.0371* |
| Body height (per 1 cm increase) | 0.98 (0.96–1.01) | 0.232 | ||
| Body weight (per 1 kg increase) | 1.00 (0.98–1.02) | 0.930 | ||
| Body mass index (per 1 kg/m2 increase) | 1.03 (0.97–1.09) | 0.345 | ||
| Systolic blood pressure (per 1 mmHg increase) | 1.00 (0.99–1.01) | 0.939 | ||
| Diastolic blood pressure (per 1 mmHg increase) | 0.99 (0.97–1.00) | 0.132 | ||
| Duration between operation to puncture (per 1 day) | 1.00 (0.99–1.00) | 0.487 | ||
| CV diameter (per 1.0 mm increase) | 0.86 (0.59–1.22) | 0.402 | ||
| RA diameter (per 1.0 mm increase) | 0.60 (0.34–1.00) | 0.0517 | ||
| Less than 2.0 mm (vs. 2.0 mm or more) | 2.76 (1.26–5.37) | 0.0133* | 2.83 (1.18–6.06) | 0.0215* |
| RA blood flow (per 1.0 ml/min increase) | 0.98 (0.96–0.99) | 0.0060* | 0.28 (0.01–7.23) | 0.485 |
| Less than 20 ml/min (vs. 20 ml/min or more) | 2.04 (1.24–3.40) | 0.0048* | 1.21 (0.60–2.62) | 0.626 |
| BA diameter (per 1.0 mm increase) | 0.78 (0.55–1.10) | 0.162 | ||
| BA blood flow (per 1.0 ml/min increase) | 0.99 (0.99–1.00) | 0.0041* | 0.23 (0.02–2.29) | 0.221 |
CI confidence interval, DM diabetes mellitus, CV cephalic vein, RA radial artery, BA brachial artery
* p value <0.05