Fig. 2

Cumulative percentage of length of stay according to K. pneumoniae status. Cumulative length of ICU stay of patients based on their K. pneumoniae status. Length of stay (days) represent total days patients were hospitalized in the ICU. The blue line represents patients that were always K. pneumoniae negative during their ICU stay. The red line represents patients already positive for carbapenem-susceptible K. pneumoniae on the day of admission. The green line represents patients already positive for carbapenem-non-susceptible K. pneumoniae on the day of admission. The orange line represents patients that acquired carbapenem-susceptible K. pneumoniae during ICU stay and the black line represents patients that acquired carbapenem-non-susceptible K. pneumoniae during ICU stay. The length of stay of patients that became positive with carbapenem-non-susceptible K. pneumoniae during ICU stay was longer than that of the other groups (Cox regression, P < 0.001)