Table 1. Characterization of patients with and those without thrombophilic risk factors (TRFs) and patients with and without shunt occlusion.

	Patients without TRF (n = 22)	Patients with TRF (n = 48)	P-value	Patients without shunt occlusion (n = 30)	Patients with shunt occlusion (n = 40)	P-value
Age (years)	61.2±14.4	61.5±12.4	0.92	57.8±13.1	66.5±11.2	<0.005
Sex (male)	13 (59.1%)	25 (52.0%)	0.62	15 (50.0%)	23 (57.5%)	0.39
Diabetes mellitus	3 (13.6%)	14 (29.1%)	0.23	9 (30.0%)	8 (20.0%)	0.33
Coronary artery disease	10 (45.5%)	28 (58.3%)	0.44	17 (56.7%)	21 (52.5%)	0.73
Stroke in history	2 (9.1%)	4 (8.3%)	1.00	1 (3.3%)	5 (12.5%)	0.15
Malignancy in history	4 (18.2%)	6 (12.5%)	0.71	4 (13.3%)	6(15.0%)	0.84
Previous venous thrombotic event	0 (0%)	4 (8.3%)	0.30*	2 (6.7%)	2 (5.0%)	0.77
Fistula location forearm (remaining: upper arm)	17 (77.3%)	37(77.1%)	0.99	24 (80.0%)	30 (75.0%)	0.62

Data are presented as mean ± SD or number (percentage).

Continuous variables (age) were compared using the unpaired t-test, and categorical variables were compared using the chi-square test (*Fisher’s exact test). A P-value ≤0.05 was considered significant.