Table 3. Risk Factors of Potentially Preventable VTE by Cancer Type, Univariate Associations (χ²) and Stepwise Regression Using Backward Elimination.

Risk factors for potentially preventable VTE	Pancreatic (N = 87)		Colorectal (N = 205)		Endometrial (N = 154)		Ovarian (N = 193)
	P value	Stepwise selection	P value	Stepwise selection	P value	Stepwise selection	P value	Stepwise selection
Chemotherapy (yes/no)	0.061	Sig.	< 0.001*	NS	0.035*	NS	0.252	NS
Indwelling lines (yes/no)	0.024*	NS	< 0.001*	Sig.	0.002*	Sig.	0.015*	Sig.
Radiotherapy (yes/no)	0.746	NS	0.629	NS	0.572	NS	0.498	NS
CRP (> 5.0 mg/L)	0.638	-	0.594	-	0.379	-	0.481	-
Surgery (yes/no)	0.043*	NS	0.221	NS	< 0.001*	Sig.	0.011*	Sig.
Platelet count (≥ 350)	0.162	NS	0.270	NS	0.045*	NS	0.769	NS
Hemoglobin level (< 100 g/L)	0.061	Sig.	0.277	NS	0.001*	NS	0.852	NS
Leukocyte count (> 11)	0.462	NS	0.190	NS	0.022*	NS	0.082	NS
BMI (≥ 35)	0.463	NS	0.460	NS	0.375	NS	0.020*	Sig.
Stage of cancer (early/advanced)	0.077	NS	0.115	NS	0.009*	NS	0.004*	NS
Khorana score** (low risk/high risk)	0.530	-	0.658	-	< 0.001*	-	0.807	-

VTE: venous thromboembolism; CRP: C-reactive protein; Sig.: remained statistically significant at the P < 0.05 level in stepwise regression; NS: not significant in stepwise regression. *Statistically significant at the P < 0.05 level. **Khorana score not calculated for patients with abdominal VTE.