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Table 2 Extended-spectrum β-lactamase-producing Enterobacteriaceae prevalence in rectal swabs and respiratory samples in the early and late groups

From: Relation between presence of extended-spectrum β-lactamase-producing Enterobacteriaceae in systematic rectal swabs and respiratory tract specimens in ICU patients

Early group (n = 1557) Respiratory sample ESBL-E (+)
45/1557 (2.9%)
Respiratory sample ESBL-E (−)
1512/1557 (97.1%)
Rectal swab ESBL-E (+)
234/1557 (15.0%)
34 200
Rectal swab ESBL-E (−)
1323/1557 (85.0%)
11 1312
Late group (n = 941) Respiratory sample ESBL-E (+)
158/941 (16.8%)
Respiratory sample ESBL-E (−)
783/941 (83.2%)
Rectal swab ESBL-E (+)
346/941 (36.8%)
119 227
Rectal swab ESBL-E (−)
595/941 (63.2%)
39 556
  1. Prevalence is expressed as absolute value (percentage). ESBL: extended-spectrum β-lactamase-producing Enterobacteriaceae. The early group is defined by respiratory samples collected within the first 5 days after intensive care unit (ICU) admission, and the late group is defined by respiratory samples collected after 5 days of ICU hospitalization