Incidence of venous thromboembolism and the role of D-dimer as predictive marker in patients with advanced gastric cancer receiving chemotherapy: A prospective study

Table 3 Multivariate analysis of risk factors for venous thromboembolism¹

Variable	HR	95%CI	P value
Prior gastrectomy (no vs yes)	0.25	0.03-1.89	0.178
History of CVC (no vs yes)	2.21	0.51-9.50	0.286
D-dimer (log)	1.32	1.00-1.75	0.051

¹All potential prognostic factors with a P value ≤ 0.15 on univariate analyses were entered into the multivariate Cox models. The final models were determined by backward elimination.