Table 1.

Main baseline demographic and clinical characteristics of the recruited patients.

	LMWH (n = 160)	Fondaparinux (n = 148)	P-value
Age (mean ± SD)	65 ± 18	64 ± 16	0.84
Males	87 (54.4)	86 (58.1)	0.91
Obesity (BMI ≥ 30)	27 (16.9)	22 (14.9)	0.96
One or more risk factors for venous thrombosis⁎	18 (11.2)	12 (8.1)	0.35
One or more risk factors for arterial thrombosis^	91 (56.9)	88 (59.5)	0.65
Severe renal failure (creatinine clearance <30 ml/min)§	5 (3.1)	3 (2.0)	0.55
PPS° (mean ± SD)	5.1 ± 1.4	4.9 ± 1.3	0.88
Baseline D-Dimer ≥2 times the cutoff value	35 (21.9)	32 (21.6)	0.95

Values in parentheses are percentages unless otherwise indicated.

^⁎Cancer, recent trauma or surgery, hormonal treatment, already known thrombophilia, previous VTE.

^{^}Heavy smoking, diabetes, blood hypertension, hyperlipemia, symptomatic atherosclerosis.

^§Requiring the use of lower doses of either drug.

^°Padua Prediction Score (≥4 in all admitted patients) [10].