Epidemiological and clinical characteristics of healthcare-associated infection in elderly patients in a large Chinese tertiary hospital: a 3-year surveillance study

Table 5 Comparison of the comorbidities and medical procedures in elderly and non-elderly

Variables	Elderly (≥60 years) N = 60,332		Non-elderly (< 60 years) N = 74,305		χ²	P
Variables	No. of cases	%	No. of cases	%
Sex
Male	33,280	55.2	34,293	46.2	1081.172	< 0.001
Female	27,052	44.8	40,012	53.8	1081.172	< 0.001
ICU admission	8352	13.8	7507	10.1	448.296	< 0.001
Operation	27,705	45.9	36,762	49.5	168.488	< 0.001
Cerebral hemorrhage	2770	4.6	3113	4.2	12.863	< 0.001
Cerebral infarction	19,779	32.8	11,350	15.3	5742.483	< 0.001
Brain neoplasms	444	0.7	269	0.4	88.371	< 0.001
Hypertension	34,050	56.4	17,931	24.1	14,661.554	< 0.001
Hyperlipidemia	8453	14.0	7424	10.0	517.187	< 0.001
Diabetes mellitus	18,885	31.3	11,827	15.6	4476.053	< 0.001
Coronary artery disease	18,352	30.4	5871	7.9	11,442.063	< 0.001
COPD	2126	3.5	302	0.4	1827.284	< 0.001
Malignant tumor	10,409	17.3	8011	10.8	1180.859	< 0.001
Malignant hematonosis	2513	4.2	1922	2.6	260.489	< 0.001
Osteoarthropathy	3207	5.3	2523	3.4	301.271	< 0.001

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