Table 4.

Multivariable logistic regression analysis in the training set.

Characteristics	OR (95%CI)	P
Activity amount
Hardly	Reference
Frequently	0.217 (0.045-1.038)	0.006
Thrombosis history (within the last 12 months)
No	Reference
Yes	33.733 (5.964-190.806)	<0.001
ATIII
≤97.5	Reference
>97.5	0.182 (0.052-0.634)	0.007
Total cholesterol (mmol/L)
<5.36	Reference
≥5.36	3.865 (1.087-13.744)	0.037
Position of catheter tip n (%)
No	Reference
Yes	0.057 (0.012-0.282)	<0.001
D-Dimer (mg/L)
≤0.55	Reference
>0.55	5.765 (1.205-25.578)	0.028

ATIII, Antithrombin III.