Table 3.

Risk factors of catheter-related infection.

Univariate analysis
Parameters		CRI		RR	CI à 95%	P
		Yes	No
Gender	Female	41	39	1	Reference	NS
	Male	59	61	1.09	[0.46–1.82]
Age (years)		58.2	55	1.01*	[0.99–1.04]	NS
BMI	< 30 kg/m2	71	86	1	Reference	< 0.04
	> 30 kg/m2	29	14	2.37	[1.05–5.37]
Poor personal hygiene status	No	71	14	1	Reference	< 0.001
	Yes	29	86	19.80	[7.65–51.32]
Diabetes	No	53	59	1	Reference	NS
	Yes	47	41	0.52	[0.64–2.46]
Seniority in HD (years)		16.5	3.7	1.02	[1.001–1.043]	< 0.04
History of bacteremia	No	88	96	1	Reference	NS
	Yes	12	4	2.38	[0.57–9.93]
History of catheterization	No	84	95	1	Reference	< 0.04
	Yes	16	5	3.41	[1.12–10.45]
Insertion site	Internal jugular	86	98	1	Reference	NS
	Femoral	10	0	3.60	[0.58–22.28]
	Sub-clavian	4	2	2.40	[0.15–39.22]
Type of catheter	Non-tunnelled	35	85	1	Reference	NS
	Tunnelled	14	31	1.19	[0.56–2.35]
Number of haemodialysis sessions per week	< 3	4	78	1	Reference	< 0.02
	3	96	22	6.48	[1.47–28.64]
Duration of the use of the catheter (months)		2.23	1.42	1.25**	[1.02–1.54]	< 0.04
Ferritinemia (ng/ml)		683.5	150.5	2.06***	[1.87–2.71]	< 0.0001
Hemoglobin (g/dl)		6.8	9.4	22.2	[7.9–62.5]	< 0.0001
Albumin (g/l)		37.1	36.7	1	[0.990–1.011]	NS

Multivariate analysis
Parameters	RR	CI à 95%	P
Poor personal hygiene status	29.09	[7.08–119.5]	< 0.0001
Duration of use of the catheter(months)	1.51	[1.12–2.03]	< 0.007
Ferritinemia (/100 ng/ml)	2.39	[1.63–3.51]	< 0.0001

Significant values are in bold.

BMI Body mass index, CRI Catheter related infection.

*Per year. **Per month. ***Each increment of 100 ng/ml.