Table 2

Univariate logistic regression of factors influencing the development of dialysis catheter-related complications

	Catheter infection			Catheter dysfunction			Central vein stenosis
Variables	OR	95% CI	p Value	OR	95% CI	p Value	OR	95% CI	p Value
Age	0.427	0.242 to 0.631	0.041	1.157	0.745 to 1.797	0.516	1.469	0.934 to 2.310	0.096
Gender	0.752	0.491 to 1.152	0.19	1.046	0.680 to 1.610	0.837	1.132	0.723 to 1.772	0.588
Primary disease	0.416	0.262 to 0.826	<0.01	0.738	0.266 to 1.613	0.125	0.692	0.148 to 0.871	<0.01
Marriage	1.109	0.701 to 1.754	0.658	1.318	0.819 to 2.122	0.256	1.377	0.854 to 2.221	0.189
Education
University			<0.01			0.225			0.150
Middle school	0.669	0.406 to 1.104	0.116	0.668	0.411 to 1.086	0.104	0.669	0.406 to 1.104	0.116
Primary school or below	2.405	1.373 to 4.214	0.002	0.962	0.538 to 1.719	0.895	0.392	0.204 to 0.753	0.072
Occupation	1.380	0.892 to 2.136	0.148	1.151	0.743 to 1.783	0.528	1.333	0.838 to 2.121	0.224
Registered residence	0.250	0.157 to 0.398	<0.01	0.218	0.137 to 0.345	<0.01	0.352	0.217 to 0.571	0.092
Medical costs
New Rural Cooperative Medical System			0.315			0.032			0.546
Medical insurance	1.475	1.273 to 2.138	0.076	3.762	0.517 to 6.319	0.047	1.545	0.612 to 1.941	0.239
Self-paying	1.958	0.512 to 2.731	0.089	6.412	3.309 to 12.076	0.017	1.368	0.203 to 1.628	0.202
Frequency of dialysis	0.882	0.735 to 1.059	0.180	0.905	0.750 to 1.092	0.296	0.937	0.772 to 1.136	0.507
Duration of haemodialysis	1.716	0.782 to 3.769	0.178	1.703	0.700 to 4.144	0.240	3.073	1.387 to 6.807	0.063
Nephropathy visit before dialysis treatment	0.110	0.064 to 0.189	<0.01	0.056	0.033 to 0.097	<0.01	0.249	0.148 to 0.420	<0.01
Pre-established permanent vascular access	0.242	0.154 to 0.381	<0.01	0.114	0.063 to 0.208	<0.01	0.225	0.140 to 0.362	<0.01
Catheter type	0.654	0.425 to 1.005	0.052	1.793	1.510 to 2.231	0.031	1.082	0.685 to 1.708	0.736
Catheter position	0.521	0.338 to 0.804	0.603	0.067	0.034 to 0.130	<0.01	0.325	0.204 to 0.516	<0.01
Number of catheter insertion procedures	1.148	0.888 to 1.485	0.292	1.669	1.276 to 2.183	0.086	2.471	1.818 to 3.360	<0.01
Imaging examination after catheter insertion	2.720	1.696 to 4.363	0.728	2.827	1.804 to 4.430	<0.01	2.106	0.148 to 0.420	0.083
Catheter access vein
Femoral vein			0.227			<0.01			0.110
Internal jugular vein	0.835	0.460 to 1.516	0.554	0.126	0.044 to 0.361	<0.01	0.37	0.202 to 0.678	0.172
External jugular vein	0.363	0.126 to 1.047	0.061	0.060	0.017 to 0.216	<0.010	0.355	0.128 to 0.984	0.471
Subclavian vein	0.572	0.219 to 1.495	0.255	0.094	0.027 to 0.332	<0.01	0.321	0.117 to 0.882	0.282
Taking oral drug to prevent catheter thrombus	0.218	0.125 to 0.379	<0.01	0.100	0.059 to 0.168	<0.01	0.189	0.089 to 0.362	<0.01
Haemoglobin	0.400	0.300 to 0.534	0.061	1.421	1.318 to 1.558	<0.01	0.514	0.383 to 0.689	0.078
Albumin	0.151	0.102 to 0.224	<0.01	0.369	0.278 to 0.489	0.572	0.585	0.441 to 0.777	0.347
Ferritin	1.857	1.375 to 2.508	<0.01	0.96	0.717 to 1.286	0.786	0.898	0.663 to 1.218	0.49