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Table 2 Number of E. coli samples with antimicrobial susceptibility testing (AST) by origin across 18 departments in the years 2008–2016

From: Intra-hospital differences in antibiotic use correlate with antimicrobial resistance rate in Escherichia coli and Klebsiella pneumoniae: a retrospective observational study

Origin of the samples Tested for All nosocomial samples (N = 2330) Samples obtained after 2 to 5 hospital days (N = 525) Samples obtained after 5 hospital days (N = 1805)
Urine AM-CL, Amox/AMP, Quinolones, TMP-SMX 1503 (65%) 377 (72%) 1126 (62%)
CFP 256 (11%) 53 (10%) 203 (11%)
CFT, Gent, MERa, PIP-TZ, 258 (11%) 55 (10%) 203 (11%)
Blood AM-CL, Amox/AMP, CFP, CFT, Gentamicin, MERa, PIP-TZ, Quinolones, TMP-SMX 264 (11%) 32 (6%) 232 (13%)
Respiratory -tract AM-CL, Amox/AMP, CFP, CFT, Gent, MERa, PIP-TZ, Quinolones, TMP-SMX 86 (4%) 29 (6%) 57 (3%)
Wound swabs AM-CL, Amox/AMP, CFP, CFT, Gent, MERa, PIP-TZ, Quinolones 83 (4%) 12 (2%) 71 (4%)
TMP-SMX 82 (4%) 12 (2%) 70 (4%)
Other AM-CL, Amox/AMP, CFP, CFT, Gent, MERa, PIP-TZ, Quinolones, TMP-SMX 394 (17%) 75 (14%) 319 (18%)
  1. Abbreviations: Amox amoxicillin, AMP ampicillin, AM-CL amoxicillin-clavulanic acid, CFP cefepime, CFT ceftriaxone, Gent gentamicin, MER meropenem, PIP-TZ piperacillin-tazobactam, TMP-SMX trimethoprim-sulfamethoxazole
  2. aNot included in the models for resistance because all samples were susceptible to Meropenem
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