Table 5.

Cox's regression of time to first complication of primary permanent vascular access

	Overall (n=246) univariate		Overall (n=246) multivariate		AVF only (n=211) univariate		AVF only (n=211) multivariate
	HR (CI)	P-value	HR (CI)	P-value	HR (CI)	P-value	HR (CI)	P-value
Female	1.57 (1.11–2.22)	0.01	1.45 (1.00–2.08)	0.048	1.40 (0.95–2.05)	0.09	1.37 (0.92–2.05)	0.1
Age	1.00 (0.99–1.01)	0.9	0.99 (0.98–1.01)	0.3	1.00 (0.98–1.01)	0.7	0.99 (0.97–1.00)	0.1
BMI	1.01 (0.97–1.04)	0.7	1.01 (0.98–1.05)	0.6	1.01 (0.97–1.05)	0.6	1.01 (0.97–1.05)	0.8
DM	1.14 (0.80–1.63)	0.5	1.16 (0.79–1.70)	0.5	1.21 (0.82–1.78)	0.3	1.15 (0.75–1.77)	0.5
Vascular disease	1.49 (1.05–2.11)	0.03	1.55 (1.05–2.30)	0.03	1.54 (1.04–2.27)	0.03	1.69 (1.10–2.60)	0.02
AID	1.80 (1.05–3.08)	0.03	1.81 (1.02–3.23)	0.04	1.90 (1.04–3.48)	0.04	2.00 (1.06–3.75)	0.03
Malignoma	1.40 (0.95–2.04)	0.1	1.40 (0.93–2.11)	0.1	1.32 (0.86–2.02)	0.2	1.48 (0.94–2.33)	0.1
AVF	1.00		1.00
AVG	2.68 (1.52–4.73)	0.001	2.37 (1.33–4.22)	0.003
PC	1.69 (0.85–3.37)	0.1	1.49 (0.73–3.03)	0.3

Follow-up cut at 4 years; overall: 128 events, AVF: 105 events. BMI, body mass index; DM, diabetes mellitus; AID, autoimmune disease; AVF, native arterio-venous fistula; AVG, arterio-venous graft; PC, permanent catheter.