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Table 3 Prevalence and incidence density rates for all multidrug-resistant organisms (MDRO) according to the intensive care unit (ICU)

From: First multicenter study on multidrug resistant bacteria carriage in Chinese ICUs

Rate ICU identification
  1 (n = 72) 2 (n = 78) 3 (n = 22) 4 (n = 132) 5 (n = 137) 6 (n = 90) 7 (n = 58) 8 (n = 97)
Number of beds 15 49 15 10 18 16 33 16
Annual number of admission 1400 3200 1200 1000 2400 2600 2200 1300
Median length of staya (range) 7.5 (2–33) 4 (2–28) 3.5 (2–17) 2 (2–28) 3 (2–38) 14 (2–29) 4 (2–22) 3 (2–28)
Number of imported cases 26 17 6 45 54 45 9 45
Number of ICU-acquired cases 19 9 1 12 19 20 7 17
Prevalence rate on admission (n/100 admissions) 36.1 21.8 27.3 34.1 39.4 50.0 15.5 46.4
Prevalence rate on discharge (n/100 admissions) 62.5 33.3 31.8 43.2 53.3 72.2 27.6 63.9
Attack rate (n/100 admissions) 41.3 14.8 6.3 13.8 22.9 44.4 14.3 32.7
Global prevalence density rate (n/1000 hospital-days) 64.5 58.2 55.1 95.8 114.1 47.5 47.2 85.6
Incidence density rate (n/1000 hospital-days)a 45.8 25.4 12.3 28.8 52.1 31.4 25.2 39.9
Median time acquisition (range) 7 (3–30) 4 (3–19) 7 (−) 7 (3–28) 5 (3–8) 7 (3–24) 7 (3–7) 12 (3–28)
  1. aLength of stay for patients included in the study