Table 4.

Univariate and multivariate Logistic Regression analysis of HCAIs in elderly care center.

	Infection	Noninfection	Univariate			Multivariate
Characteristics	n = 98 (3.77%)	n = 2499 (96.23%)	OR	95% CI	P	OR	95% CI	P
Age >70 y	72 (73.47%)	1352 (54.10%)	2.349	1.490–3.704	<0.01
Sex, male	70 (71.43%)	1567 (62.71%)	0.673	0.431–1.050	0.079
The total hospitalization-days	26.77 ± 12.116	11.79 ± 9.382			<0.01	1.077	1.049–1.107	0.000
Antibiotic agents used	86 (87.76%)	744 (29.77%)	16.905	9.185–31.114	<0.01	7.210	3.183–16.329	0.000
Days of antibiotics	11.57 ± 9.695	2.78 ± 5.398			<0.01
Surgery procedure	27 (27.55%)	284 (11.36%)	2.966	1.872–4.698	<0.01
Combined antibacterial drugs	43 (43.88%)	322 (12.89%)	5.286	3.488–8.011	<0.01
Combined antibiotics duration	3.79 ± 5.978	1.01 ± 3.190			<0.01
Use of ventilator	9 (9.18%)	38 (1.52%)	6.549	3.073–13.958	<0.01
Days of ventilator	1.40 ± 6.283	0.16 ± 1.755			<0.01
Frequency of ventilator	0.17 ± 0.658	0.02 ± 0.174			<0.01
Use of central line catheter	20 (20.41%)	63 (2.52%)	9.915	5.713–17.206	<0.01
Days of central line catheter	4.30 ± 9.233	0.38 ± 2.806			<0.01	1.095	1.007–1.190	0.035
Frequency of indwelling central line catheter	0.29 ± 0.658	0.03 ± 0.201			<0.01
Use of urinary catheter	64 (65.31%)	311 (12.44%)	13.243	8.593–20.410	<0.01	2.943	1.113–7.782	0.030
Days of urinary catheter	12.79 ± 14.250	1.93 ± 6.419			<0.01
Frequency of indwelling urinary catheter	0.99 ± 0.902	0.16 ± 0.479			<0.01
Diabetes	45 (45.92%)	562 (22.49%)	2.926	1.945–4.402	<0.01	2.350	1.437–3.843	0.001
High blood pressure	68 (69.39%)	1605 (64.23%)	1.263	0.815–1.955	0.295
Coronary heart disease	60 (61.22%)	1335 (53.42%)	1.377	0.910–2.082	0.129
Cerebral infarction	71 (72.45%)	1543 (61.74%)	1.629	1.038–2.556	0.032
Chronic lung disease	55 (56.12%)	899 (35.97%)	2.276	1.515–3.421	<0.01
Tumor	15 (15.31%)	270 (10.80%)	1.492	0.849–2.623	0.162
Urological disease	40 (40.82%)	524 (20.97%)	2.599	1.718–3.933	<0.01