Independent variable | B | SE | P | OR | 95%CI |
Constant term | 13.42 | 4.652 | <0.001 | <0.001 | 4.652 - 23.632 |
Number of puncturing times | 3.782 | 0.746 | <0.001 | 8.762 | 4.053 - 23.685 |
Positioning method | 6.322 | 0.674 | <0.001 | 9.253 | 5.693 - 32.157 |
Maintenance frequency | 5.736 | 0.324 | 0.003 | 10.324 | 2.329 - 24.956 |