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Table 1 Comparison of HAI incidence density in elderly and non-elderly patients

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

 Patient daysNo. of HAIsIncidence density (per 1000 patient-days)RR95% CIP
Elderly (≥60 y)572,48515802.81.5301.422–1.651< 0.001
Non-elderly (< 60 y)624,42711261.8
  1. CI confidence interval, RR rate ratio