Risk factors of health care–associated infection in elderly patients: a retrospective cohort study performed at a tertiary hospital in China

Table 3 Adjusted odds ratios for the association between HAI and risk factors among inpatients aged 60+, Beijing, China

	β	Wals χ2	OR	95% CI.		P
	β	Wals χ2	OR	Lower limit	Upper limit	P
Age	.204	16.168	1.226	1.110	1.355	< 0.001
Body weight	−.015	21.077	.985	.979	.991	< 0.001
Hospital days before HAI	−.026	16.718	1.138	1.131	1.145	< 0.001
Operation	−.370	14.642	.691	.572	.835	< 0.001
ICU admission	.388	11.606	1.474	1.179	1.842	.001
Using ventilator	.624	16.419	1.867	1.380	2.525	< 0.001
Using central line catheter	1.350	159.015	3.856	3.126	4.755	< 0.001
Using urinary catheter	1.047	102.414	2.848	2.325	3.488	< 0.001
Cerebral hemorrhage	.329	5.662	1.389	1.060	1.821	.017
Cerebral infarction	.370	20.308	1.448	1.233	1.701	< 0.001
Brain neoplasms	.359	12.419	1.432	1.173	1.748	< 0.001
Diabetes mellitus	.181	5.196	1.198	1.026	1.400	.023
Coronary artery disease	.166	3.968	1.180	1.003	1.389	.046
Malignant tumor	.162	5.946	1.176	1.032	1.339	.015
Malignant hematonosis	1.613	244.942	5.018	4.100	6.141	< 0.001

Notes: Binary multivariable logistic regression was performed. Statistical testing was performed at the conventional 2-tailed α = 0.05.OR Odds ratio
CI confidence interval
Only significant predictors are presented. Variables adjusted in the model include age, body weight, hospital days before HAI, operation, ICU admission, use of ventilator, central line catheter and urinary catheter and some neurological and chronic noncommunicable diseases (including cerebral hemorrhage, cerebral infarction, brain neoplasms, hypertension, diabetes mellitus, coronary artery disease, COPD, malignant tumor, malignant hematonosis and gynecological diseases)

ISSN: 1471-2318